Find the next number in the series.
1 10 24 43 67 ?

Can you make four (4) nines (9) equal 100?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

Replace the question mark in the picture below.

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

You are provided with a grid (as shown in the picture). Can you fill the squares with numbers 1-8 in a manner that none of the two consecutive numbers are placed next to each other in any direction (vertically, horizontally or diagonally?)

The centre of the third figure is empty. What digit should fit inside?

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

O T T F F S S ?