Four different objects 1 2 3 are distributed at random in four places What is the probability t...........

Quantitative Aptitude(IBPS RRB PO) Probability

Four different objects 1,2,3 are distributed at random in four places. What is the probability that none of the objects occupies the place corresponding to its number?

1/6

1/3

1/2

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Explanation:

Explanation :
PLACE: 1 2 3 4
Random : 2134 , 2143 , 2314 ,2341 , 2413 ,2431
None of the objects occupies the place of that number = 2143 ,2341,2413
n(S) = 6, n(E) = 3
p = 3/6 = 1/2