Count the Triangle in the figure given below:

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Be active and find the killer in the picture Riddle below.

What is the next number in this series?

4,12,84,3612....

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

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?

What begins with T, ends with T, and has T in it?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?