Question

A box contains 25 cards numbered from 1 to 25 a card is drawn at random from the bag find the probability that the number on the drawn card is first divisible by 2 or 3 a prime number

Answer 1

the prob of getting no. divisible by 2 or 3 is 12/25

Answer 2

Total outcome: 25

1) Favourable outcome (divisible by 2 & 3 means divisible by 6 i.e 6,12,18 & 24) = 4

P= 4/25

b) Favourable outcome (2,3,5,7,11,13,17,19,23)=9

P= 9/25