Latest Gate Aptitude Question SOLUTION: Q. A fair dice is rolled twice.the probability that an odd number will follow an even number is. Option a)1/2 b)1/6 c)1/3 d)1/4

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(#M40031167) GATE Numerical Ability question MJ Keep an EYE

Q. A fair dice is rolled twice.the probability that an odd number will follow an even number is.

Option
a)1/2
b)1/6
c)1/3
d)1/4

Asked In Gate Mareesh janadri (10 years ago)

Unsolved Read Solution (5)

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mukesh prashad  (10 years ago)

d. 9/36=1/4

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sai pavan  (10 years ago)

Dice rolled two times
No of possibles to get odd number in first time -> 3/6
1,3,5
No of possibles to get even number in 2nd time -> 3/6
2,4,6

No of possible combinations {(1,2),(1,4),(1,6),(3,2),(3,4),(3,6),(5,2),(5,4),(5,6)} -->9/36

So the probability is 9/36=1/4

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ajay  (10 years ago)

dices having six sides divided it into two parts as 3/6 and 3/6,then no.of possible combinations {(1,2),(1,4),(1,6),(3,2),(3,4),(3,6),(5,2),(5,4),(5,6)} -->9/36.
so the probability is 9/36 is 1/4. so,"d" is the answer.

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vijay  (10 years ago)

dices having six sides divided it into two parts as 3/6 and 3/6,(1,3,5) & (2,4,6) then no.of possible combinations {(1,2),(1,4),(1,6),(3,2),(3,4),(3,6),(5,2),(5,4),(5,6)}=9/36.
so the probability is 9/36 = 1/4. so,(d) is the answer.

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c.lakshmi prasanna  (10 years ago)

the probability that first rolled die is a even number is 3/6
the probability that second rolled die is a odd number is 3/6
=3/6 *3/6 =1/4

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