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# BARC 2020: Engineering Mathematics Nuclear Quiz 1 (App update required to attempt this test)

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Question 1

Let X be the random variable. Consider the following table with the probability distribution values of X.

Find the value of P(X<4).Round upto two decimal places).

Find the value of P(X<4).Round upto two decimal places).

Question 2

Fifteen coupons are numbered, 1, 2, 3, ..... 15. Seven coupons are selected at random one at a time with replacement. The probability that the largest number appearing on the selected coupon is 9, is

Question 3

Match the following Lists.

A-

B-

C-

D-

1- Discrete distribution

2- Continuous distribution

**List-I**A-

B-

C-

D-

**List-II**1- Discrete distribution

2- Continuous distribution

Question 4

An urn contains 5 red and 7 green balls. A ball is drawn at random and its colour is noted. The ball is placed back into the urn along with another ball of the same colour. The probability of getting a red ball in the next drawn is

Question 5

A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?

Question 6

If , then the cofactor of element a

_{31}is _______.Question 7

The value of

Question 8

Let the function

is increasing for x>4

is decreasing for 0<x<4

Which of the above statements are TRUE?

is increasing for x>4

is decreasing for 0<x<4

Which of the above statements are TRUE?

Question 9

If A and B are two 3x3 matrices and & , then find the value of

Question 10

If E[X] = 5, what will be the value of E[4X+2]?

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Mar 7GATE & PSU CS

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