ICSE Class X Math 2016 Solved 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 .

∴

The number of favourable outcomes

=4

∴ {\P}(

Divisible by 7 )

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

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