Can you find out which number multiplied by itself will give the output as 12345678987654321?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

Can you solve below mathematical equation?

2^1234 - 2^1233

Solve below popular number sequence
314 159 265 358 979 323 846 ?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?