Question

0 maths probability a box contains 20 cards from 1- 20 .a card is drawn at random from the box find the probability that the number on the drawn card is 1. divisible by 2 or 3 , 2. a prime number

Answer 1

there are 10 numbers divisible by 2 which are 2, 4, 6, 8, 10, 12, 14 16 18 20 and the numbers which are divisible by 3 or 3 9 15 we had already taken 6 12 and 18 so the total numbers are 13 and the probability is 13 by 20 the second answer is the total prime numbers are 2 3 5 7 11 13 17 and 19 these numbers are IIT in accounting so the probability is 8 by 20

Answer 2

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