Q. 235.0( 1 Vote )

Mark the correct A. 4/5

B. 1/5

C. 1/3

D. 2/3

Answer :



P (X = 1) = 8 P (X = 3)

P =?

P(x=r)= nCr pr qn-r

P(x=1)= nC1 p1 qn-1

=3pq2 (1)

P(x=3)= 3C3 p3 q0

= p3(2)

Put values in the equations ,we have:

3pq2 =8 p3

3 (1-p)2 = 8p2

3+3p2-6p = 6p2


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