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標題: If a is the 2nd number of 4 consecutive numbers, what is their average? [打印本頁]

作者: Bon 時間: 10-1-24 12:46 標題: If a is the 2nd number of 4 consecutive numbers, what is their average?

How to do it ?

tks

作者: 一家的太陽 時間: 10-1-24 13:36

The 4 consecutive numbers are (a-1), a, (a+1) and (a+2),
so,their average is
{(a-1)+ a+(a+1) + (a+2)}÷4
=(4a+2)÷4
=a+1/2

作者: Bon 時間: 10-1-24 13:44 標題: 回覆 2# 一家的太陽的文章

tks for sharing!

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