What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Can you quickly find which two matchstick figures are identical?

What does this rebus mean?

O
N
C
E
TIME

Which is the rope you never skip with?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?