If you say my name, I will no longer exist. What am I?

Which is faster, Heat or Cold ? Explain.

Can you fill the blank with the correct number?

6 30 870 756030 _____

The Little ant seems to be always confused. Do you know why?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

A non-stop marathon is the shared favourite sport of three brothers.

*The oldest one is fat and short and trudges slowly on.
*The middle brother's tall and slim and keeps a steady pace.
*The youngest runs just like the wind, speeding through the race.

"He is young in years, we let him run!" the other two brothers explained, "'because though he is surely number one, he is second, in a way." Why is it?

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?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?