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

Which number should replace the question mark?

What number do you get when you multiply all of the numbers on a telephone's number pad?

Can you replace the question mark with the correct number in the below table sequence?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

I cannot talk, but I always reply when spoken to. What am I?

Count the number of triangles in the given picture.

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

Two old friends, Jack and Jill, meet after a long time, and discussing as:

Jack: Hey, how are you, man?

Bill: Not bad, got married and I have three kids now.

Jack: That's awesome. How old are they?

Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.

Jack: Cool..But I still don't know.

Bill: My eldest kid just started taking piano lessons.

Jack: Oh, now I get it.

How old are Bill's kids?