题目内容
x、y、z是三个非零自然数,且x×
=y÷
=z×
,那么x、y、z按照从大到小的顺序排列应是( )
| 5 |
| 4 |
| 5 |
| 6 |
| 9 |
| 8 |
| A.x>y>z | B.z>y>x | C.y>x>z | D.y>z>x |
因为x×
=y÷
=z×
,
则可以假设①x×
=1,x=
,
②y÷
=1,y=
,
③z×
=1,z=
;
又因
=
=
,
=
=
,
=
=
,
且
>
>
,
即
>
>
;
因此z>y>x.
故答案为:B.
| 5 |
| 4 |
| 5 |
| 6 |
| 9 |
| 8 |
则可以假设①x×
| 5 |
| 4 |
| 4 |
| 5 |
②y÷
| 5 |
| 6 |
| 5 |
| 6 |
③z×
| 9 |
| 8 |
| 8 |
| 9 |
又因
| 4 |
| 5 |
| 4×18 |
| 5×18 |
| 72 |
| 90 |
| 5 |
| 6 |
| 5×15 |
| 6×15 |
| 75 |
| 90 |
| 8 |
| 9 |
| 8×10 |
| 9×10 |
| 80 |
| 90 |
且
| 80 |
| 90 |
| 75 |
| 90 |
| 72 |
| 90 |
即
| 8 |
| 9 |
| 5 |
| 6 |
| 4 |
| 5 |
因此z>y>x.
故答案为:B.
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