As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Different lights make me strange by changing me into different sizes. What am I?

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?

A rain drop fell from one leaf to another leaf and lost 1/4th of its volume. It then fell to another leaf and lost 1/5th of the volume. It again fell on another leaf and lost 1/5th of the volume.



This process kept repeating till it fell on the last leaf losing 1/75th of its volume.



Can you calculate the total percentage of loss from the initial volume when the drop has fallen to the last leaf accurate up to two decimal places?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

A Miser man decided to go on a vacation for a month. He goes to the bank and asks for a trip loan of $500. The bank officer asks the man that the loan can only be approved when he mortgage some valuable thing at the bank. Miser man mortgages his only car whose worth was a whopping $80000. The Bank officer laughed at him and approve the loan instantly. After vacation when the miser man returns, the bank officer asked him "Are you an idiot, why is your mortgage such an expensive car for such a short loan?".

Miser man replied with some reason and the bank officer agreed that the miser man is actually not an idiot.

What did miser man reply to the bank loan officer?.

A man dies of old age on his 25 birthday. How is this possible?

I know a nine-letter word having only one vowel.
Do you ?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.