Class 10 Math All topics Probability

$17$ card numbered $1,2,3,4,....,17$ are put in a box and mixed thoroughly. A card is drawn at random from the box. Find the probability that the card drawn bears a number divisible by $5$.

Solution:

Total numbers of outcomes $=17$

Odd numbers on the cards $={1,3,5,7,9,11,13,15,17}$

Numbers divisible by $5$ from $1$ to $17={5,10,15}$

Number of favorable outcomes $=3$

$P$ (getting a number divisible by $5$) $=173 $

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