UGC NET General Q1

Question

The probably of a boy are bbb, bbg, bgb, gbb, bgg, gbg, ggb, ggg, which is 8 'equally likely' cases, one meets desired criteria, probability of desired criteria is 1/8 .
2. Probability that first child is not boy= 1/2
Probability that second child is not boy= 1/2
Probability that third child is not boy= 1/2
Probability that none of the three children is a boy= 1/2 x 1/2 x 1/2= 1/8
 
35. If the radius of a circle is increased by 50 per cent. Its area is increased by:

Accepted Answer

125 per cent