Question

Numbers 1 to 20 are written on twenty separate slips (one number on one slip) kept in a box and mixed well. One slip is chosen from the box without looking into it. What is the probability of getting a number less than 15​

Answer 1

Answer:

because 1, 2 ,3 , 5 , 7, 11, 13 , 17, 19 are only prime numbers from 1 to 20. therefore we can conclude that option a or 9/20 is the correct answer.