How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

Can you divide the below-given shape into four equal and identical pieces?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Find the number of squares in the below-given picture.

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

I am sure no one can have two things for dinner. what are they?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

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?