On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

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

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not-rounded numerals equals 24.

How is the moon similar to a dollar?