Can you count the number of triangles in the picture below?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Can you write down eight eights so that they add up to one thousand?

What number do you get when you multiply all of the numbers on a telephone's number pad?

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

A father is locked up in jail. His wife has gone bankrupt. Their male child has to sell his hotel in order to gain some money. Yet their girl child does not care and is quite happy.

How can someone be so rude?

How many triangles are there on the puzzle below?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

what one word does the below rebus identifies?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?