Data Sufficiency Set 1

Data Sufficiency Set-1

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Hello Readers,

Data Sufficiency Questions are very important in every competitive examination. You can easily find a set of such questions in every examination.

There are 5 set of options In which includes

1) If statement I alone is sufficient to answer the question, while II alone is not.
2) If statement II alone is sufficient to answer the question, while I alone is not.
3) If either I or II alone are sufficient to answer the question.
4) If data in both I and II together are not sufficient to answer.
5) If data in both I and II together are necessary to answer

The rule for these questions is that every statement is independent and we will not assume anything on the basis of last statement. It is only in option number 4(given above) that we take both statements together and club there results to get our desired result.

Exercise:

Directions (Qs. 1 to 5): Each of these questions comprises a question followed by 2 statements I and II. Read the statements and decide whether they are sufficient to answer the question. Give your
Answers as:
A) If statement I alone is sufficient to answer the question, while II alone is not.
B) If statement II alone is sufficient to answer the question, while I alone is not.
C) If either I or II alone are sufficient to answer the question.
D) If data in both I and II together are not sufficient to answer.
E) If data in both I and II together are necessary to answer.

1. What is the speed of the athlete?
Statements:
I. He has a relative speed of 10 km/hr with a cyclist passing him from opposite direction at 20 km/hr.
II. He crossed a 75 m long platform in 2.5 seconds.

2. How much is the cost of painting the 4 walls of this room?
Statements:
I. The cubical room has volume 64 m3.
II. The rates of painting this room and the next one are the same and the next room of base area 3 × 4 m2 and height 2 m, was painted for Rs 560.

3. How old is Mohit’s sister?
Statements:
I. Mohit’s age is 33.33% of his sister’s age.
II. After 2 years, the sum of their ages will be 36 years.

4. Solving the simultaneous equations, what will be the value of p?
Statements:
I. 7/2p + 9q = 42
II. 3/2p + 27/7q = 18

5. What is the area of the right-angled triangle?
Statements:
I. sec2 θ – tan2 θ = 1
II. cot (90° – θ ) =12 / 13
Answers:
1) C
2) E
3) E
4) D
5) D

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