SECTION – 2 : (One Integer Value Correct Type)
This section contains 10 questions. Each question, when worked out will result in one integer from 0 to 9 (both inclusive).
Let n 1 < n 2 < n 3 < n 4 < n 5 be positive integers such that n 1 + n 2 + n 3 + n 4 + n 5 = 20. Then the number of such distinct arrangements (n 1 , n 2 , n 3 , n 4 , n 5 ) is _________
Text Solution
Verified by Experts7
(7)When n5 takes value from 10 to 6 the carry forward moves from 0 to 4 which can be arranged in
Alternate solution
Possible solutions are
1, 2, 3, 4, 10
1, 2, 3, 5, 9
1, 2, 3, 6, 8
1, 2, 4, 5, 8
1, 2, 4, 6, 7
1, 3, 4, 5, 7
2, 3, 4, 5, 6
Hence 7 solutions are there.
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