问题 解答题
计算:
(1)27
2
3
+16-
1
2
-(
1
2
)-2-(
8
27
)-
2
3
+lg
1
100
-3log32

(2)log2
1
25
×log3
1
8
×log5
1
9
答案

(1)式子=3

2
3
+42×(-
1
2
)
-2(-1)×(-2)-(
2
3
)
3×(-
2
3
)
+lg10-2-2

=9+

1
4
-4-
9
4
-2-2=-1.

(2)式子=

log5-22
×
log2-33
×
log3-25
=-12
log52
×
log23
×
log35
=-12.

单项选择题
单项选择题