# Statistics and Probability (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Math): Questions 8 - 9 of 9

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## Question number: 8

» Statistics and Probability » Probability of an Event

Appeared in Year: 2015

MCQ▾

### Question

Let and let a subset of be chosen so that every pair of elements of A differ by at least 3. (For example, if , A can be , {2} or {1,5} among others). When let the probability that be and let the probability that be . Then –

### Choices

Choice (4) Response

a.

and

b.

and

c.

and

d.

and

## Question number: 9

» Statistics and Probability » Probability of an Event

Appeared in Year: 2016

MCQ▾

### Question

A box contains blue balls and red balls. A ball is drawn randomly from the box and is returned to the box with another ball of the same color. The probability that the second ball drawn from the box is blue is –

### Choices

Choice (4) Response

a.

b.

c.

d.

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