Probability Test

Result

Probability Test - 4

Score
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Weekly Quiz Competition

Question 1
1 / -0

Neelam and Nidhi throw with a dice .The chance that both Neelam and Nidhi throw the same number is

A
1/ 36

B
1/ 2

C
1/ 6

D
none of these

Solution

TOTAL NO. OF OUTCOMES=6²=36

no. of outcomes in which both throws same no.={(1,1),(2,2),(3,3),(4,4),(5,5),(6,6)}=6

p(both throws same no.)=6/36=1/6
Question 2
1 / -0

A dice is tossed once and even number has come up. The chance that it is either 2 or 4 is

A
4/ 9

B
2/ 3

C
2/ 6

D
none of these

Solution

Total number of ways of getting even number is 3

Out of these 3 even number we have to get either 2 or 4 which can be done in 2 ways.

So required probability is 2/3
Question 3
1 / -0

A pair of dice is tossed once and a total of 8 has come up. The chance that both the dice show up same number is

A
1/ 5

B
5/ 216

C
1/ 6

D
none of these

Solution

on tossing a pair of dice total outcomes are 36

out of which getting a total of 8 have possiblities {(2,6),(6,2),(3,5),(5,3),(4,4)}=5

and from these 5 outcomes getting same no. on both dice is (4,4)=1

so, probability is 1/5