Question

One digit is selected from 20 positive integers. What is the probability that it is divisible by 3 or 4.

Answer 1

$\huge\red{HELLO\:MATE}$

Total number of possible outcomes = 20.

Total number of favourable outcomes = 3 , 9 , 6 , 12 , 15 , 18 , 4 , 8 , 16 , 20 = 10.

$<b>Therefore P(getting a number divisible by 3 and 4 )= (favourable outcomes/possible outcomes)</b>$

=${ 10/20 = 1/2 .}$