I’m tall when I’m young, and I’m short when I’m old. What am I?

Find the hidden tiger in the given optical illusion ?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

What is the next number in the series?

15 29 56 108 208 ?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

How many sides does a circle have?

Who always enjoys poor health?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?