Find the last number in the series below:

voN luJ yaM raM ---

If it took eight men ten hours to build a wall, how long would it take four men to build it?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

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

What goes up but never comes down?

I have Rs.50 and I spend it in the way as below.

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Can you fill the blank with the correct number?

6 30 870 756030 _____

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

Can you count the number of triangles in the given picture?