Data Sufficiency(Quantitative Aptitude ) Questions and Answers

Question 1.

Each boy contribute rupees equal to the number of girls and each girl contribute rupees equal to the number of boys in a class of 60 students.

If the total money then collected was RS1600. How many boys were there in the class?

  1.    30
  2.    25
  3.    15
  4.    40
Explanation:-
Answer: Option D. -> 40

Question 2. Three statements I, II and III given below the question. You have to decide whether the data given in the statements is sufficient to answer the question. Read all the statements carefully and find which of the statements are sufficient to answer the given question. Choose the correct alternative in this question.

Who among Siddhartha, Nikunj, Vipul and Mukul is the youngest ?  

I. Vipul is younger than Mukul but older than Siddhartha and Nikunj. 
II. Mukul is the oldest. 
III. Siddhartha is older than Nikunj. 
  1.    Only I
  2.    I and II together
  3.    II and III together
  4.    I and III together
Explanation:-
Answer: Option D. -> I and III together

Question 3.

Total money with Naresh and Ajay is 28 percent of that with Usman. How much money is Ajay having ? 

I. Usman has got Rs.75000II. The ratio of money of Naresh to money held by Ajay is 1:3 
  1.    If the data in statement I alone are sufficient to answer the question
  2.    If the data in statement II alone are sufficient answer the question
  3.    If the data either in I or II alone are sufficient to answer the question;
  4.    If the data in both the statements together are needed.
Explanation:-
Answer: Option D. -> If the data in both the statements together are needed.

Question 4. In the last month the company decided to increase the cost of its mixer by 10 percent
  1.    If the data in statement I alone are sufficient to answer the question
  2.    If the data in statement II alone are sufficient answer the question
  3.    If the data either in I or II alone are sufficient to answer the question;
  4.    If the data even in both the statements together are not sufficient to answer the question
Explanation:-
Answer: Option B. -> If the data in statement II alone are sufficient answer the question

Question 5. Pradeep correctly remembers that his mother's is before twenty third February but after ninteenth February, whereas his brother correctly remembers that their mother's birthday is not on or after twentysecond February. On which day in February is definitely their mother's birthday ?
  1.    20 or 21
  2.    20
  3.    21
  4.    None
Explanation:-
Answer: Option A. -> 20 or 21

Question 6.  The Chairman of a big company visits one department on Monday of every week except for the Monday of third week of every month. When did he visit the Purchase department ? I. He visited Accounts department in the second week of September after having visited Purchase department on the earlier occasion.II. He had visited Purchase department immediately after visiting Stores department but before visiting Accounts department. 
  1.    If the data in statement I alone are sufficient to answer the question
  2.    If the data in statement II alone are sufficient answer the question
  3.    If the data either in I or II alone are sufficient to answer the question;
  4.    If the data even in both the statements together are not sufficient to answer the question
Explanation:-
Answer: Option A. -> If the data in statement I alone are sufficient to answer the question

Question 7. Four subjects — Physics, Chemistry, Mathematics and Biology were taught in four consecutive periods of one hour each starting from 8.00 a.m. At what time was the Chemistry period scheduled ?  I. Mathematics period ended at 10.00 a.m. which was preceded by Biology. II. Physics was scheduled in the last period. III. Mathematics period was immediately followed by Chemistry. 
  1.    Only I
  2.    Only I or Only II
  3.    Only II
  4.    I and II together or I and III together
Explanation:-
Answer: Option D. -> I and II together or I and III together