Question

A bag contains 4 black balls and 3 white balls balls are picked up one by one at random and placed in a row the chance that balls are alternatively of different colors is

Answer 1

Answer:

0.1199500208

Step-by-step explanation:

WhiteBlackWhiteBlack or BlackWhiteBlackWhite

This can be done in above two ways.

Let us consider 1st way i.e WBWB

Required Probability :

(4/7)*(3/7)*(4/7)*(3/7)

=144/2401

=0.0599750

Same probability for BWBW.

Therefore net required Probability: 2*0.0599750

=  0.1199500208

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i hope it will helps you