Data Sufficiency

NEARLY 20+ QUESTION WILL BE ASKED IN SBI AND OTHER PO EXAMS

This is also one interesting section of reasoning paper. Mastering this section is not very difficult but meanwhile may not be a cake walk too.

Example 1. In which year was Rahul born ?

Statements: Rahul at present is 25 years younger to his mother.

Rahul's brother, who was born in 1964, is 35 years younger to his mother.

I alone is sufficient while II alone is not sufficient

II alone is sufficient while I alone is not sufficient

Either I or II is sufficient

Neither I nor II is sufficient

Both I and II are sufficient

Solution: Take statement one & try solving but alone statement 1 will not be sufficient. However

statement 2 is also not sufficient alone, but taking both of the statement together question can be

solved. Hence answer is e.

Example 2. What will be the total weight of 10 poles, each of the same weight ?

Statements: One-fourth of the weight of each pole is 5 kg.

The total weight of three poles is 20 kilograms more than the total weight of two poles.

I alone is sufficient while II alone is not sufficient

II alone is sufficient while I alone is not sufficient

Either I or II is sufficient

Neither I nor II is sufficient

Both I and II are sufficient

Solution: From statement 1. W/4 = 5 therefore W=20 Kg. So total weight = 200 Kg.

From statement 2. 3W= 20+ 2W, W=20. So total weight is 200 Kg.

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Therefore c is the correct answer. To understand various patterns you should practice well & try solving different type of questions.