16th June 2006 at 01:00
Puzzles to test mathematical skills, set by Anita Straker. Solutions below More brainteasers on

Number search

Hidden in this block are the words zero to twelve inclusive, and twenty, fifty, seventy and hundred.

Can you find them all?

SOLUTIONS Number search (ages 5 to 8)

How old are they?

1. Mrs Brown was asked how old she was.

She said:"When you divide my age by 2, 3, 4 or 6, there is always 1 left over, but when you divide it by 7, there is no remainder."

How old is Mrs Brown?

2. Mrs Jones was asked how old she was.

She said: "When you divide my age by 6, there is 5 left over. When you divide it by 5, there is 4 left over, and when you divide it by 4, there is 3 left over."

How old is Mrs Jones?

SOLUTIONS How old are they? (ages 9 to 13) Mrs Brown is 49. Find numbers that can be divided exactly by 2, 3, 4 and 6 (12, 24, 36, 48, 60, 72). Add 1 and check for a multiple of 7. Mrs Jones is 59. Find the smallest number that can be divided exactly by 6, 5 and 4, then subtract 1.

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