x, y and z are integers such that y+z<8, x>0, y>0, z>0. How many pairs (x,y) are possible.

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28 Nov 2011 pair

x, y and z are integers such that y+z<8, x>0, y>0, z>0. How many pairs (x,y) are possible.

OPtion

1) 21
2) 42
3) 84
4) 100
5) 256
6) 1024
7) 64
8) 1380
9) infinite
10) none of these

Solution

You can take any value in the place of x

Correct Option: 9 Best Solution (0)