Mind Exercise: Numbers

Mental exercise sharpens memory and delays the onset of age related mental disorders. Mind gymnastics are also fun and make great conversation starters.

Sharpen your mind and exercise your brain with these puzzles.

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Exercise:

A number between 1 and 50 has these characteristics:

• It is divisible by 3
• When the digits are added together the total is between 4 and 8,
• It is an odd number,
• When the digits are multiplied together the total is between 4 and 8

What is the number?

Source: The Complete Book of Fun Maths, Philip Carter & Ken Russell

Solution here