Question

A bag contains cards numbered 7 to 49 are put in a box and mixed throughly.A card is drawn from the box what is the probability that the number written on the top of it is a multiple of 7

Answer 1

Multiples of 7 up to 49:
7
14
21
28
35
42
49

Therefore, multiple of 7 occurs seven times.

There are 43 cards altogether.

Therefore, P(multiple of seven)= 7/43

Knowledge point: probability