There are forty elephants and they have forty-fore heads. How can this be possible?

Solve the following series:
AZ, GT, MN, __, YB

Can you solve the maths in the below-given picture equation?

Where do fish keep their money?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?