Question

11
A bag contains 50 coins and each coin is marked from 51 to 100. If one coin is picked at random, then
is the probability that the number on the coin is not a prime number is


[a]
2
a)
3
b)
5.
5
c)
d)
5​

Answer 1

Answer:

Total number of coins = 50

∴ Total outcomes = 50

prime numbers between 51 to 100 are = 53,59,61,67,71,73,79,83,87,97

Total prime numbers = 10

p(prime number) =

50

10

=

5

1

Since, P(prime number) + P(not a prime number) = 1

∴

5

1

+ P( not a prime number) = 1

∴ P(not a prime number) = 1−

5

1

=

5

4

Answer 2

Answer:

C} 5apetula =a} 3compliet the pattern became