CTET 2 Math and Science 3 Jan 2022 Paper

Question : 44 of 150

Marks: +1, -0

A box contains some slips on which numbers

25,26,27, . . . . . . . . . . .49

, are written (one number in one slip). A slip is drawn at random from the box. What is the probability that the selected slip bears a prime number?

Solution:

Prime number are

29,31,37,41,43,47

Total number of events

=25

Favorable events

=6

Probability

=\;{\;\text " Number of favorable event "\;}/{\;\text " Total number of event "\;}

\Rightarrow

Probability

=6 \/ 25=0.24

∴

The probability to be a prime number is

0.24

The correct option is 3 i.e.

0.24

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