Question

33. Cards numbered from 1 to 100 are placed in a box. One card is drawn at random. Find the probability i) it is a prime number ii) it is a multiple of 5 and 6 iii) it is a factor of 7 or 9.

Answer 1

Answer:

means

I don't understand the question

please explain

Answer 2

Step-by-step explanation:

Total numbers between 1 and 100 is 100

1. There are 25 prime numbers between 1 and 100 (2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97)

Probability is no of prime numbers/total numbers

$= \frac{25}{100} = \frac{1}{4} = 0.25$

2. numbers which are multiple of 5 and 6 are 30, 60 and 90

Probability is

$\frac{3}{100} = 0.03$

3. Factor of 7 or 9 are 1,3,7 &9

probability is

$\frac{4}{100} = 0.04$