Questions
Two numbers are selected at random from a set of first 120 natural numbers, then the probability that product of selected number is divisible by 3 is
a
13357
b
199357
c
158357
d
160357
detailed solution
Correct option is B
{3,6,9,−−−,120}{1,2,4,5,−−−,119}P(A)=40C2+80C1×40C1120C2=199357Talk to our academic expert!
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