4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

What Deficiency does the below rebus represent?

VIT_MIN

Can you count the number of quadrilaterals in the picture below?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

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?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

All of you like to eat me. I am a five-lettered word. Remove the first two and I turn into an infamous animal. Remove just the first and I become a heinous crime. Remove the first and the last and you can groove on me.

Can you guess who am I?

10+10 and 11+11 can give you the same answer.

Explain how?