I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

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?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

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

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

Identify the 10 differences between the two given pictures.

Why is the Hole below a Lock?

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?

A bomb exploded in a room full of married couples and no one died. How?