[問題]GWD 0-33

[narofara]

Q33:
A photographer will arrange 6 people of 6 different heights for photograph by placing them in two rows of three so that each person in the first row is standing in front of someone in the second row. The heights of the people within each row must increase from left to right, and each person in the second row must be taller than the person standing in front of him or her. How many such arrangements of the 6 people are possible?

A. 5 ←ans
B. 6
C. 9
D. 24
E. 36

請幫我解答吧各位高手
謝謝!!

[sklpeng]

一個一個湊~

[szyang]

同GWD10-25
http://www.chemy.idv.tw/phpbb2/viewtopic.php?t=817&highlight=from+left+++right

要一各各湊說~

[narofara]

感謝感謝~
我了解了 還真的得一個一個湊哩.... dora08