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

A man had five children. He had $100 with him to give to his children. He decided to start with the youngest child and then give $2 more than each younger child to his next elder child.

For example, if he gives $x to the youngest child, he will give $(x+2) to the next one, $[(x+2) + 2] to the next one and so on.

Can you find out how much did the youngest one receive?

How many triangles can you find in this given picture?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

Why do you find that most of the buildings are deprived of the 13th floor?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

Which city is three-fifths chick two third cat and 50% goat?

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

Rearrange the letters in "new door" to make one word.

Find three whole, positive numbers that have the same answer when multiplied together as when added together.