Replace the question mark with the correct number.

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

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?

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

Whats the next number in the below number sequence pattern.

Can you count the number of triangles in the given figure?

Which is the correct shadow of the bird?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?