Question

You are given a question and two statements. Find out which statement is necessary / sufficient to answer the question.

Question:

How many pages of crime novel did Katir read on Saturday?

Statement:

I: Katir read the last 50 pages of the book on Sunday morning.

II. The book contains 450 pages, of which two-thirds of the pages were read before Saturday.
1.

The collected information of both I and II statements is necessary

2.

Only statement II is sufficient

3.

Only statement I or statement II alone is sufficient

4.

Only statement I is sufficient

Answer 1

Correct Answer - Option 1 :

The collected information of both I and II statements is necessary

Given:

I: Katir read the last 50 pages of the book on Sunday morning.

II. The book contains 450 pages, of which two-thirds of the pages were read before Saturday.

Concept Used:

Simplification

Calculation:

From statement II:

The book contains 450 pages and two-thirds of the pages were read before Saturday.

Page read before Saturday (2/3) × 450

⇒ 300

Remaining pages (450 - 300) = 150

From statement I:

Read last 50 pages on Sunday morning.

Pages read in Saturday is (150 - 50) = 100

∴ From the above, it is clear that we need two statements together to get the desired result.