填加减乘除4个符号。1,1,1=6,2,2,2=6.3,3,3=6.4,4,4=6.5,5,5=6.6,6,6=6.7,7,7=6.8,8,8=6.9,9,

Question

填加减乘除4个符号。1,1,1=6,2,2,2=6.3,3,3=6.4,4,4=6.5,5,5=6.6,6,6=6.7,7,7=6.8,8,8=6.9,9,9=6

Answer 1

(1 + 1 + 1)! = 3! = 6
2 + 2 + 2 = 6
3 x 3 - 3 = 9 - 3 = 6
√4+√4+√4=6
5+5÷5=6
6×6÷6=6
7-7÷7=6
8-√√（√8+√8）=6
9-9÷√9=6

阶乘：
n!=n×(n-1)×(n-2)×...×2×1
0!=1(规定)
1!=1
2!=2×1=2
3!=3×2×1=6
4!=4×3×2×1=24
5!=5×4×3×2×1=120

Answer 2

(1+1)^2+(1+1)=6
2+2+2=6
3*3-3=6
4^1/2+4^1/2+4^1/2=6
5+5/5=6
6+6-6=6
7-7/7=6
8-8^0-8^0=6
9-9/9^1/2=6