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Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

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14 Divisors

What is the smallest number with exactly 14 divisors?

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Summing Consecutive Numbers

Many numbers can be expressed as the sum of two or more consecutive integers. For example, 15=7+8 and 10=1+2+3+4. Can you say which numbers can be expressed in this way?

Regional Division

Stage: 3 Short Challenge Level: Challenge Level:1

The diagram shows two rectangles which enclose five regions.

two rectangles at an angle, one contains the numbers 4,2,5 the other 1,2,3

What is the largest number of regions which can be enclosed by any two rectangles drawn on a sheet of paper?

 

If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.

This problem is taken from the UKMT Mathematical Challenges.
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