Question

Cards marked with numbers $4$ to $99$ are placed in a box and mixed thoughtly. One card is drawn from this box. Find the probability that the number on the card is a multiple of $7$.

Answer 1

We have,

Total numbers are $=96$

Number on the card is a multiple of $7$ $=(7,14,21,28,35,42,49,56,63,70,77,84,91,98)$

Number$=14$

Then,

Probability of cards is multiple of $7$

$=\frac{14}{96}$

$=\frac{7}{48}$

Hence, this is the answer.