How can a man go eight days without sleep?

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

Count the number of triangles in the below picture?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Which is the smallest number that you can write using all the vowels exactly once?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3