John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

Remove two matchsticks to make the below equation correct.

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

Move three sticks of the spiral below to form a square.

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

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?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Which five letter word can be added at the end of below word to form a
valid word?

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There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?