Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

If a wheel has 54 spokes, how many spaces are there between the spokes?

What is red and smells like blue paint?

'Ferrari driver' easily beats the 'force driver' in a two-car race. How did Indian newspapers truthfully report so to look as a 'force drive' had outdone the 'Ferrari driver'? Think!!!

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

What does this mean?

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How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?