Question

cal 90 to 20 which are numbers 291 opened at random from the book find the probability that it will be a two digit number,a perfect square no,a no. divisible​

Answer 1

Answer:

Number of perfect square from 1 to 90 are 1,4,9,16,25,36,49,64,81.

Total cases =90

Favorable cases =9

Therefore, probability =

90

9

=

10

1