Question

1) A box contains 90 discs which are numbered from 1
to 90. If one disc is drawn at random from the
box, then find the probability that it bears
I ;) A two digit number 1) A perfect square number
ir) A number divisible by 5.
​

Answer 1

Step-by-step explanation:

Given: a box contains 90 discs..

probability of two digit number = no.of two digit no./ n (s)

no. of two digit number=90-9=81

p (two digit no.) =81/90