Question

a number is selected at random from first 50 natural numbers . find the probability that it multiple of 3 and 4

Answer 1

Multiples of 3 from first 50 natural numbers=16(3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,and 48)
Multiples of 4 from first 50 natural numbers=12(4,8,12,16,20,24,28,32,26,40,44,48)
Multiples common in both= 4 (12,24,36,48)
So the numbers can be selected =)(16+12)-4=24
So Number of favourable outcomes =24
Total number of outcomes=50
So, Probability=24/50
=12/25 Ans..