Question

Cards marked with the number $2$ to $101$ are placed in a box and mixed thoroughly. One card is drawn from the box. Find the probability that the number on the card is:
i) An even number
ii) A number less than $14$
iii)A number is perfect square
iv) A prime number less than $20$

Answer 1

Total outcomes (no.) $:100$

1st

favourable : $50$

probability $=50/100=1/2$

2nd

favourable $:12$

probability $=12/100=3/25$

3rd

favourable : $10$

probability =$10/100=1/10$

4th

favourable :$8$

probability $=8/100=2/25$