Three numbers are chosen at random from the first 20 natural numbers. Then the probability that their product is odd is

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

10C3 20C3

1− 10C3 20C3

( 10C1)3 20C3

10C1 20C3

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

n(S)=20C3 If the product is odd then all the 3 numbers are oddn(E) = 10C3 P(E)= 10C3 20C3 ∴ The probability that their product is odd is 10C3 20C3

Watch 3-min video & get full concept clarity