4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

Solve the alphametic puzzle by replacing the alphabet with the number.

S T O R M +
S O L E S
=========
T O W E L
=========

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

What is at the end of a rainbow?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?