Question

A box contains 100 discs which are numbered from 1 to 100. If one disc is drawn at random , find the probability that it bears :
[i] a two digit number
[ii] a perfect square
[iii] a number divisible by 5.​

Answer 1

Answer:

1) there are 91 two digit numbers so probality is 91/100

2) there are 10 perfect squares so prpbality is 10/100

3)there.are 100/5 numbers divisible by 5 = 20

so the pprbaloty is 20/100