0,-3,8,-15,24,.的规律.第十个是多少求讲解.

Question

如题所述

Answer 1

如果把-号去掉,很容易看出规律0,3,8,15,24,35,48,63,80,99,120,它们之间相差3,5,7,9,11,13,15.
根据规律,添上-号,就是0,-3,8,-15,24,-35,48,-63,80,-99,120
所以 ,第十个数是-99