A box contains 90 discs, numbered from 1 to 90. If one disc is drawn at random from the box,find the probability that it bears a prime number < 23.

A box contains 90 discs, numbered from 1 to 90. If one disc is drawn at random from the box, the probability that it bears prime number less than 23 is

A box contains 90 discs,numbered from 1 to 90.If one disc is drawn at random from the box,the probability that it bears a prime number less than 23, is (7)/(90) (b) (10)/(90) (c) (4)/(45) (d) (9)/(89)

A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears : a perfect square number

A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears : a number divisible by 5.

(i) A box contins 80 discs, which are numbered from 1 to 80. If one disc is drawn at random from the box, find the probability that it bears a perfect square number. (ii) A box contains 90 discs which are numbered 1to 90. If one disc is drawn at random from the box , find the probability that it bears (a) a two-digit number (b) a number divisible by 5

A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears (i) a two-digit number, (ii) a number divisible by 5.

A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears : a two-digit number

A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box,find the probability that it bears (i) a two-digit number (ii) a perfect square number (iii) a number divisible by 5.

A box contains 90 discs which are numbered from 1 to 90. If one discs is drawn at random from the box,find the probability that it bears (i) a two digit number (ii) a perfect square number (iii) a number divisible by 5.

A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears (i) a two -digit number, (ii) a perfect square numbes, (iii) a number divisible by 5.