1. Data Sufficiency: Structure & Format by Ayman Sadiq [Skill development]
Data Sufficiency Easy 4
- Data Sufficiency set: A,B,C,D,E statement (For Question 1 - 10 ) A.Statement (i) ALONE is sufficient, but statement (ii) alone is not sufficient to answer the question asked. B. Statement (ii) ALONE is sufficient, but statement (i) alone is not sufficient to answer the question asked. C. BOTH statements (i) and (ii) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked D. EACH statement ALONE is sufficient to answer the question asked E. Statements (i) and (ii) TOGETHER are NOT sufficient to answer the question asked, and additional data are needed The number of seats in the first row of an auditorium is 18 and the number of seats in each row thereafter is 2 more than in the previous row. What is the total number of seats in the rows of the auditorium? (i) The number of rows of seats in the auditorium is 27. (ii) The number of seats in the last row is 70.
- Is Shakib taller than Rokibul? (i) Shakib is taller than Huda. (ii) Huda is not as tall as Rokibul.
- If p1 and p2 are the populations and r1 and r2 are the numbers of representatives of District 1 and District 2, respectively, the ratio of the population to the number of representatives is greater for which of the two districts? (i) p1 > p2 (ii) r2 > r1
- What is the value of x –1? (i) x + 1 =3 (ii) x – 1 < 3
- If i and j are integers, is i+ j an even integer? (i) i <10 (ii) i = j
- Was 70 the average (arithmetic mean) grade on a class test? (i) On the test, half of the class had grades below 70 and half of the class had grades above 70. (ii) The lowest grade on the test was 45 and the highest grade on the test was 95.
- Mehedi holds 12 cards, each of which is red, white, green, or blue. If a person is to select a card randomly from the cards Mehedi is holding, is the probability less than 1/2 that the card selected will be either red or white? (i) The probability that the person will select a blue card is 1/3. (ii) The probability that the person will select a red card is 1/6.
- If x and y are positive, is x < 10 < y ? (i) x < y and xy = 100 (ii) x2 < 100 < y2
- Zihan’s net income equals his gross income minus his deductions. By what percent did Zihan’s net income change on January 1, 1989, when both his gross income and his deductions increased? (i) Zihan’s gross income increased by 4 percent on January 1, 1989. (ii) Zihan’s deductions increased by 15 percent on January 1, 1989.
- In a certain class, one student is to be selected at random to be the class reparative. What is the probability that a boy will be selected? (i) Two-thirds of the students in the class are boys. (ii) Ten of the students in the class are girls.