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?

John was piloting a plane behind a car but was never able to overtake it. Why?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

Which part of London exists in France as well ?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?