Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Can you find the mistake in the below statement?

Can you place six X (crosses) in below board without making three in a row in any way ?

Find the next number in the series below.

6 18 270 72090 ?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?