Find the next number in the sequence

5 12 24 36 ?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

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?

Solve the equation in the image by looking at the pattern closely.

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Can you place three balls such that the equation shown in the picture holds true?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?