Name a key which is hardest to turn.

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

If Rajina's daughter is my daughter's mom, who am I to Rajina?

What is next number in the pattern below:

131 517 192 123 ?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

In the image given, you can find several triangles. Can you count them all?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?