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## Difficult Math Problem #86 - Combinations

tagged by: Roland2rule

This topic has 4 member replies
800guy Master | Next Rank: 500 Posts
Joined
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Posted:
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#### Difficult Math Problem #86 - Combinations

Fri Jan 12, 2007 12:33 am
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
B. 6
C. 9
D. 24
E. 36

OA coming after some people answer

jaheer Junior | Next Rank: 30 Posts
Joined
15 Feb 2007
Posted:
11 messages
Thu Feb 15, 2007 8:11 pm
Have we missed one more configuration?

135
246

Oops! i counted it twice, ITs 5.

800guy Master | Next Rank: 500 Posts
Joined
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Wed Jan 17, 2007 11:32 am
OA:

5 ways

123 124 125 134 135
456 356 346 256 246

thankont Senior | Next Rank: 100 Posts
Joined
15 Dec 2006
Posted:
41 messages
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Fri Jan 12, 2007 12:52 am
I would go for 5

123
456

124
356

125
346

135
246

134
256

thanx

Argen Junior | Next Rank: 30 Posts
Joined
07 Jan 2007
Posted:
24 messages
1
Fri Jan 12, 2007 12:59 am

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