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UPSC Civil Services 2019 Prelims General Studies Paper II
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© examsnet.com
Question : 6
Total: 80
How many triplets (x, y, z) satisfy the equation x + y + z = 6, where x, y and z are natural numbers?
4
5
9
10
Validate
Solution:
x y z
–
–
–
–
1 1 4
1 4 1
4 1 1
1 2 3
1 3 2
3 1 2
3 2 1
2 2 2
2 3 1
2 1 3
–
–
–
–
Total Number of triplets = 10.
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