01. Math Hacks #1: Multiplication Shortcut! By Ayman Sadiq [Admission]

Math

Arithmetic Hard 5

⏱ 10:00

- A jar contains only white and blue marbles of identical size and weight. The ratio of the number of white marbles to the number of blue marbles is 4 to b. If the probability of choosing a white marble from the jar at random is 1⁄4, then what is the value of b?
- Six buses are to carry 200 students on a field trip. If each bus must have no more than 40 students and no fewer than 30 students, then what is the greatest number of buses that can have 40 students?
- Twenty students in a chemistry class took a test on which the overall average score was 75. If the average score for 12 of those students was 83, what was the average score for the remaining members of the class?
- Each term in a sequence of numbers, except for the first term, is 2 less than the square root of the previous term. If the third term of this sequence is 1, what is the first term?
- When r is divided by 10, the remainder is 9. What is the remainder when r + 2 is divided by 5?
- The price of a certain stock was d dollars on January 1, 2003. The price decreased by 20% in January, increased by 40% in February, decreased by 25% in March, and increased by 25% in April. In terms of d, what was the price of the stock at the end of April?
- In a round robin tennis tournament involving seven players, each player will play every other player twice. How many total matches will be played in the tournament?
- If the sum of seven integers is even, at most how many of these integers could be odd?
- Nazia commutes to work one morning at an average speed of 40 mph. She returns home along the same route at an average speed of 24 mph. If she spends a total of 2 hours traveling to and from work that day, how many miles is her commute to work?
- One bag of potatoes of a certain brand weighs 40 ounces. Five pounds of these potatoes cost $4.00. If Nafisul has exactly $20.00 to spend on potatoes, what is the maximum number of bags he can buy? (1 pound = 16 ounces)

02. Math Hacks #2: Multiplication Shortcut of 11 [Admission]

03. Math Hacks #3: Division Shortcut! By Ayman Sadiq [Admission]

04. Math Hacks #4: Squaring Shortcut! By Ayman Sadiq [Admission]

05. Math Hacks #5: Multiply with just Lines! By Ayman Sadiq [Admission]

06. Math Hacks #6: The Tricky Angles! By Ayman Sadiq [Admission]

07. Math Hacks #7: The 'All in One Formula' of Finding Areas! By Ayman Sadiq

08. Math Hacks #8: The Trick of Drawing Cirlces! By Ayman Sadiq [Admission]

09. Math Hacks #9 Summation of a Series by Ayman Sadiq [Admission]

10. Math Hacks #10: Pythagorean Triplets [Admission]

11. Math Hacks #12: Angle Between Clock Hands by Ayman Sadiq [Admission]

12. Math Hacks #13 Algebra! Solving The Impossible by Ayman Sadiq [Admission]

13. Math Hacks #14 The Mystery of Power & Exponents by Ayman Sadiq [Admission]

One Formula To Rule Them All! By Ayman Sadiq

#1 Divide the Quadrilateral! By Ayman Sadiq

#2 Divide the Circle! By Ayman Sadiq [Admission]

#3 How Many Squares Are There? By Ayman Sadiq [Admission]

#4 How Many Triangles Are There? By Ayman Sadiq [Admission]

#5 Find The Angle! By Ayman Sadiq [Admission]

#6 Find The Area! By Ayman Sadiq [Admission]

#7 Think Outside of The Box! By Ayman Sadiq [Admission]

#8 'Fibonacci' Series! By Ayman Sadiq [Admission]

09. Tricky Maths #9 by Ayman Sadiq [Admission]

10. Tricky Maths #10 by Ayman Sadiq [Admission]

Tricky Math: The Famous Matchstick Problem by Ayman Sadiq [Admission]

01. Math Shortcuts - Percentage (শতকরা) by Ayman Sadiq

02. Math Shortcuts - Division Shortcut (ভাগ) by Ayman Sadiq

03. Math Shortcuts - Percentage Shortcut 1 (শতকরা শর্টকাট ১) by Ayman Sadiq

04. Math Shortcuts - Percentage Shortcut 2 (শতকরা শর্টকাট ২) by Ayman Sadiq

05. Math Shortcuts - Inequality (অসমতা) by Ayman Sadiq

06. Math Shortcuts - L.C.M. (ল.সা.গু) by Ayman Sadiq

07. Math Shortcuts - Zero – Even or Odd? (শূন্য – জোড় না বিজোড়?) by Ayman Sadiq

08. Math Shortcuts - Facts About Zero (শূন্য নিয়ে যত কথা)

09. Math Shortcuts - Exception in Squaring (বর্গফলে ব্যাতিক্রম) by Ayman Sadiq

10. Math Shortcuts - Prime Numbers (মৌলিক সংখ্যা) by Ayman Sadiq

11. Math Shortcuts - Speed (গতি) by Ayman Sadiq

12. Math Shortcuts - Crossing Trains (চলমান ট্রেন) by Ayman Sadiq

13. Math Shortcuts - Boats and Tides (নৌকা ও স্রোত) by Ayman Sadiq

14. Math Shortcuts - Work and Time (কাজ ও সময়) by Ayman Sadiq

15. Math Shortcuts - Probability (সম্ভাব্যতা) by Ayman Sadiq

16. Math Shortcuts - Lines and Angles (রেখা ও কোন) by Ayman Sadiq

17. Math Shortcuts - Different Types of Angles (কোণ) by Ayman Sadiq

18. Math Shortcuts - Area (ক্ষেত্রফল) by Ayman Sadiq

19. Math Shortcuts - Tricky Math #1 (বিভ্রান্তিকর অংক #১) by Ayman Sadiq

20. Math Shortcuts - Tricky Math #2 (বিভ্রান্তিকর অংক #২) by Ayman Sadiq

1. Percentage [SSC | HSC | Admission]

2. Profit and Loss [SSC | HSC | Admission]

3. Unitary Method [SSC | HSC | Admission]

4. Interest [SSC | HSC | Admission]

5. Time and Distance [SSC | HSC | Admission]

6. Train [SSC | HSC | Admission]

7. Boats and Streams [SSC | HSC | Admission]

8. Permutation and Combination [SSC | HSC | Admission]

9. Mixture [SSC | HSC | Admission]

10. Probability [SSC | HSC | Admission]

11. Work Done [SSC | HSC | Admission]

12. Ratio Proportion [SSC | HSC | Admission]

13. Arithmetic Exercise - Easy 1 by Ayman Sadiq [SSC]

14. Arithmetic Exercise - Easy 2 by Ayman Sadiq [SSC]

15. Arithmetic Exercise - Easy 3 by Ayman Sadiq [SSC]

16. Arithmetic Exercise - Easy 4 by Ayman Sadiq [SSC]

17. Arithmetic Exercise - Easy 5 by Ayman Sadiq [SSC]

18. Arithmetic Exercise - Easy 6 by Ayman Sadiq [SSC]

19. Arithmetic Exercise - Easy 7 by Ayman Sadiq [SSC]

20. Arithmetic Exercise - Easy 8 by Ayman Sadiq [SSC]

21. Arithmetic Exercise - Easy 9 by Ayman Sadiq [SSC]

23. Arithmetic Exercise - Easy 11 by Ayman Sadiq [SSC]

24. Arithmetic Exercise - Easy 12 by Ayman Sadiq [SSC]

25. Arithmetic Exercise - Easy 13 by Ayman Sadiq [SSC]

26. Arithmetic Exercise - Easy 14 by Ayman Sadiq [SSC]

27. Arithmetic Exercise - Easy 15 by Ayman Sadiq [SSC]

28. Arithmetic Exercise - Easy 16 by Ayman Sadiq [SSC]

22. Arithmetic Exercise - Easy 10 by Ayman Sadiq [SSC]

01. The Number Tree by Ayman Sadiq [JSC | SSC | HSC | Admission]

02. Even and Odd by Ayman Sadiq [JSC | SSC | HSC | Admission]

03. Divisibility by Ayman Sadiq [JSC | SSC | HSC | Admission]

04. Prime Numbers by Ayman Sadiq [JSC | SSC | HSC | Admission]

05. Rounding Off by Ayman Sadiq [JSC | SSC | HSC | Admission]

06. Average (Part 1) by Ayman Sadiq [JSC | SSC | HSC | Admission]

07. Average (Part 2) by Ayman Sadiq [JSC | SSC | HSC | Admission]

08. Equation by Ayman Sadiq [JSC | SSC | HSC | Admission]

09. Inequalities by Ayman Sadiq [JSC | SSC | HSC | Admission]

10. Exponents by Ayman Sadiq [JSC | SSC | HSC | Admission]

11. LCM by Ayman Sadiq [JSC | SSC | HSC | Admission]

12. HCF by Ayman Sadiq [JSC | SSC | HSC | Admission]

13. Algebra Exercise - Easy 1 by Ayman Sadiq [Admission]

14. Algebra Exercise - Easy 2 by Ayman Sadiq [Admission]

15. Algebra Exercise - Easy 3 by Ayman Sadiq [Admission]

16. Algebra Exercise - Easy 4 by Ayman Sadiq [Admission]

17. Algebra Exercise - Easy 5 by Ayman Sadiq [Admission]

18. Algebra Exercise - Easy 6 by Ayman Sadiq [Admission]

19. Algebra Exercise - Easy 7 by Ayman Sadiq [Admission]

20. Algebra Exercise - Easy 8 by Ayman Sadiq [Admission]

21. Algebra Exercise - Easy 9 by Ayman Sadiq [Admission]

22. Algebra Exercise - Easy 10 by Ayman Sadiq [Admission]

23. Algebra Exercise - Easy 11 by Ayman Sadiq [Admission]

24. Algebra Exercise - Easy 12 by Ayman Sadiq [Admission]

25. Algebra Exercise - Easy 13 by Ayman Sadiq [Admission]

26. Algebra Exercise - Easy 14 by Ayman Sadiq [Admission]

01. Lines by Ayman Sadiq [Admission]

02. Angles by Ayman Sadiq [Admission]

03. Complementary and Supplementary Angles by Ayman Sadiq [Admission]

04. Alternate Angles, Corresponding Angles and Vertically Opposite Angles by Ayman Sadiq

05. Angles of Triangles by Ayman Sadiq [Admission]

06. Types of Triangles by Ayman Sadiq [Admission]

07. Pythagorean Theorem by Ayman Sadiq [Admission]

08. Pythagorean Triplets by Ayman Sadiq [Admission]

09. Ratio of sides of a 45-45-90 Triangle by Ayman Sadiq [Admission]

10. Ratio of sides of a 30-60-90 Triangle by Ayman Sadiq [Admission]

11. Sum of Angles of a Polygon by Ayman Sadiq [Admission]

12. Quadrilaterals by Ayman Sadiq [Admission]

13. 'All in one' formula of finding Area of Parallelograms by Ayman Sadiq

14. Perimeter of Quadrilaterals by Ayman Sadiq [Admission]

15. Area of Trapezium by Ayman Sadiq [Admission]

16. Circles by Ayman Sadiq [Admission]

17. Inscribed Angles of a Circle by Ayman Sadiq [Admission]

18. Chords by Ayman Sadiq [Admission]

19. বৃত্তের ক্ষেত্রফল (Area of a Circle) [Admission]

20. Cube by Ayman Sadiq [Admission]

21. Rectangular Solid by Ayman Sadiq [Admission]

22. সিলিন্ডের ও Cone (Cylinder and Cone) [Admission]

23. গোলক (Sphere) [Admission]

24. ঘড়ি (Clock) [Admission]

25. Combo Math [JSC | SSC | HSC | Admission]

26. Geometry Exercise - Easy 1 by Ayman Sadiq [Admission]

27. Geometry Exercise - Easy 2 by Ayman Sadiq [Admission]

28. Geometry Exercise - Easy 3 by Ayman Sadiq [Admission]

29. Geometry Exercise - Easy 4 by Ayman Sadiq [Admission]

30. Geometry Exercise - Easy 5 by Ayman Sadiq [Admission]

31. Geometry Exercise - Easy 6 by Ayman Sadiq [Admission]

32. Geometry Exercise - Easy 7 by Ayman Sadiq [Admission]

33. Geometry Exercise - Easy 8 by Ayman Sadiq [Admission]

34. Geometry Exercise - Easy 9 by Ayman Sadiq [Admission]

35. Geometry Exercise - Easy 10 by Ayman Sadiq [Admission]

36. Geometry Exercise - Easy 11 by Ayman Sadiq [Admission]

37. Geometry Exercise - Easy 12 by Ayman Sadiq [Admission]

38. Geometry Exercise - Easy 13 by Ayman Sadiq [Admission]

39. Geometry Exercise - Easy 14 by Ayman Sadiq [Admission]

40. Geometry Exercise - Easy 15 by Ayman Sadiq [Admission]

41. Geometry Exercise - Easy 16 by Ayman Sadiq [Admission]

42. Geometry Exercise - Easy 17 by Ayman Sadiq [Admission]

01. Math Hacks #1: Multiplication Shortcut! By Ayman Sadiq [Admission]

02. Math Hacks #2: Multiplication Shortcut of 11 [Admission]

03. Math Hacks #3: Division Shortcut! By Ayman Sadiq [Admission]

04. Math Hacks #4: Squaring Shortcut! By Ayman Sadiq [Admission]

05. Math Hacks #5: Multiply with just Lines! By Ayman Sadiq [Admission]

06. Math Hacks #6: The Tricky Angles! By Ayman Sadiq [Admission]

07. Math Hacks #7: The 'All in One Formula' of Finding Areas! By Ayman Sadiq

08. Math Hacks #8: The Trick of Drawing Cirlces! By Ayman Sadiq [Admission]

09. Math Hacks #9 Summation of a Series by Ayman Sadiq [Admission]

10. Math Hacks #10: Pythagorean Triplets [Admission]

11. Math Hacks #12: Angle Between Clock Hands by Ayman Sadiq [Admission]

12. Math Hacks #13 Algebra! Solving The Impossible by Ayman Sadiq [Admission]

13. Math Hacks #14 The Mystery of Power & Exponents by Ayman Sadiq [Admission]

#1 Divide the Quadrilateral! By Ayman Sadiq

#2 Divide the Circle! By Ayman Sadiq [Admission]

#3 How Many Squares Are There? By Ayman Sadiq [Admission]

#4 How Many Triangles Are There? By Ayman Sadiq [Admission]

#5 Find The Angle! By Ayman Sadiq [Admission]

#6 Find The Area! By Ayman Sadiq [Admission]

#7 Think Outside of The Box! By Ayman Sadiq [Admission]

#8 'Fibonacci' Series! By Ayman Sadiq [Admission]

09. Tricky Maths #9 by Ayman Sadiq [Admission]

10. Tricky Maths #10 by Ayman Sadiq [Admission]

Tricky Math: The Famous Matchstick Problem by Ayman Sadiq [Admission]

01. Math Shortcuts - Percentage (শতকরা) by Ayman Sadiq

02. Math Shortcuts - Division Shortcut (ভাগ) by Ayman Sadiq

03. Math Shortcuts - Percentage Shortcut 1 (শতকরা শর্টকাট ১) by Ayman Sadiq

04. Math Shortcuts - Percentage Shortcut 2 (শতকরা শর্টকাট ২) by Ayman Sadiq

05. Math Shortcuts - Inequality (অসমতা) by Ayman Sadiq

06. Math Shortcuts - L.C.M. (ল.সা.গু) by Ayman Sadiq

07. Math Shortcuts - Zero – Even or Odd? (শূন্য – জোড় না বিজোড়?) by Ayman Sadiq

08. Math Shortcuts - Facts About Zero (শূন্য নিয়ে যত কথা)

09. Math Shortcuts - Exception in Squaring (বর্গফলে ব্যাতিক্রম) by Ayman Sadiq

10. Math Shortcuts - Prime Numbers (মৌলিক সংখ্যা) by Ayman Sadiq

11. Math Shortcuts - Speed (গতি) by Ayman Sadiq

12. Math Shortcuts - Crossing Trains (চলমান ট্রেন) by Ayman Sadiq

13. Math Shortcuts - Boats and Tides (নৌকা ও স্রোত) by Ayman Sadiq

14. Math Shortcuts - Work and Time (কাজ ও সময়) by Ayman Sadiq

15. Math Shortcuts - Probability (সম্ভাব্যতা) by Ayman Sadiq

16. Math Shortcuts - Lines and Angles (রেখা ও কোন) by Ayman Sadiq

17. Math Shortcuts - Different Types of Angles (কোণ) by Ayman Sadiq

18. Math Shortcuts - Area (ক্ষেত্রফল) by Ayman Sadiq

19. Math Shortcuts - Tricky Math #1 (বিভ্রান্তিকর অংক #১) by Ayman Sadiq

20. Math Shortcuts - Tricky Math #2 (বিভ্রান্তিকর অংক #২) by Ayman Sadiq

২৭। অধ্যায় ২ঃ বীজগাণিতিক রাশিঃ গাণিতিক সমস্যাবলী পর্ব ১১ (Mathematical Problems – Part 11) [SSC]

২৮। অধ্যায় ২ঃ বীজগাণিতিক রাশিঃ প্রয়োজনীয় সূত্রসমূহ (Necessary Rules) [SSC]

২৯। অধ্যায় ২ঃ বীজগাণিতিক রাশিঃ মূলদ ভগ্নাংশ (Rational Fractions) [SSC]

৩০। অধ্যায় ২ঃ বীজগাণিতিক রাশিঃ গাণিতিক সমস্যাবলী পর্ব ১২ Mathematical Problems – Part 12

০৩৮। অধ্যায় ৩ঃ বীজগাণিতিক রাশিঃ বীজগাণিতিক রাশি কি? ( What is Algebraic Expression?) [SSC]

০৩৯। অধ্যায় ৩ঃ বীজগাণিতিক রাশিঃ বীজগাণিতিক সূত্র ১, ২ (Algebraic Formula 1, 2) [SSC]

০৪০। অধ্যায় ৩ঃ বীজগাণিতিক রাশিঃ অনুসিদ্ধান্ত ১-৪ (Corollary 1 to 4) [SSC]

০৪১। অধ্যায় ৩ঃ বীজগাণিতিক রাশিঃ অনুসিদ্ধান্ত ৫, ৬ (Corollary 5, 6) [SSC]

০৪২। অধ্যায় ৩ঃ বীজগাণিতিক রাশিঃ বীজগাণিতিক সূত্র ৩, ৪, ৫ ( Algebraic Formula 3, 4, 5 ) [SSC]

০৪৩। অধ্যায় ৩ঃ বীজগাণিতিক রাশিঃ অনুসিদ্ধান্ত ৭, ৮ (Corollary 7, 8 ) [SSC]