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 ?

How many sides does a circle have?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

What does this Rebus Picture mean?

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

I am an odd number. Take away a letter and I become even. What number am I?

Take away the whole and some still remain. What is it?