Why is 6 afraid of 7?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

I look at you, you look at me, I raise my right, you raise your left. What am I?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.