Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

What breaks yet never falls, and what falls yet never breaks?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

What does this mean?

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