Probability Test

Result

Probability Test - 42

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Weekly Quiz Competition

Question 1
4 / -1

For the two events A and B, P(A) = 0.38, P(B) = 0.41, then the value of P(A not) is

A
0.41

B
0.62

C
0.59

D
0.21

Solution
Question 2
4 / -1

The probability that A speaks truth is 4/5, while this probability for B is ¾. The probability that they contradict each other when asked to speak on a fact

A

B

C

D

Solution
Question 3
4 / -1

The probability of getting head and tail alternatively in three throws of a coin (or throw of three coins), is

A

B

C

D

Solution
Question 4
4 / -1

A couple has three children. The probability of having 2 sons and a daughter, if the eldest child is a son is

A
2/3

B
1/2

C
3/4

D
None of these

Solution
Question 5
4 / -1

A

B

C

D

Solution
Question 6
4 / -1

A number is chosen at random from first ten mutual numbers. The probability that number is odd and perfect square is

A

B

C

D

Solution
Question 7
4 / -1

The probability that a marksman will hit a target is given as 1/5. Then his probability of at least one hit in 10 shoots is

A

B

C

D
None of these
Question 8
4 / -1

A beg contains 3 red and 5 black balls and a second bag contains 6 red and 4 black balls. A ball is drawn from each bag. The probability that one is red and other is black is

A

B

C

D
None of these

Solution
Question 9
4 / -1

A card is drawn randomly from a pack of playing cards. Then the probability that it is neither ace nor king is

A

B

C

D

Solution
Question 10
4 / -1

There are 4 envelopes with addresses and 4 concerning letters. The probability that letter does not go into concerning proper envelope, is

A

B

C

D

Solution