There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

Which number should replace the question mark?

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

What is the next number?

77, 49, 36, 18 ?

In the picture given below, can you find out which digit will take place of the question mark?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

If it took eight men ten hours to build a wall, how long would it take four men to build it?