﻿ What number is right in the middle between one through 19? - science mathematics
What number is right in the middle between one through 19?

## What number is right in the middle between one through 19?

[From: Mathematics] [author: ] [Date: 01-07] [Hit: ]
What number is right in the middle between one through 19?......

What number is right in the middle between one through 19?

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David say: The median number is 10
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Funnelweb say: 10
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RR say: If you add 1 + 19 and divide by 2, you get 10

or

You could add them all together and find the mean: 190/19 = 10

or

You could write them all down and count inwards from both ends:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
The middle one is 10.

or

You could divide 18 by 2 and add one = 10
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Φ² = Φ+1 say: The midpoint of 1 and 19 on the number line is (1+19)/2 = 20/2 = 10 (which is 9 units from both 1 and 19).
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Puzzling say: It's the average of the endpoints:
(1 + 19) / 2
= 20/2
= 10