Question

Cards marked with number 2 to 100 are placed in a box and mixed throughly. Once card is drawn from this box. Find the probavility that the number on the card is
1).a number less than 14.
2).a number which is a perfect square.
3).a prime number less than 20.

Answer 1

1. 12/99
2. 9/99
3. 8/99....

Answer 2

Hey sup!

As per the question,

Total outcome= 2 to 100=99.

1) favorable outcome={2,3,4,5,6,7,8,9,10,11,12,13}=12.
So, probability=12/99.
=4/33.

2) favorable outcome={4,9,16,25,36,49,64,81,100} =9.
So, probability= 9/99.
=1/11.

3) favorable outcome={2,3,5,7,11,13,17,19}=8.
so, probability= 8/99.

Hope it helps.