ICSE Class X Math 2016 Paper

A game of number has cards marked with $11,12,13, . . . 40$ . A card is drawn at random. Find the Probability that the number on the card drawn is :

Question : 14 of 57

Marks: +1, -0

Divisible by 7.

Solution:

Since required (favourable) outcomes are :

14,21,28

and 35 .

\therefore

The number of favourable outcomes

=4

\therefore P(

Divisible by 7 )

= \frac{4}{30} = \frac{2}{15} . \; \;

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