If there are 10 positive real numbers n1 u003c n2 u003c n3 … u003c n – McqOptions

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1.	If there are 10 positive real numbers n1 u003c n2 u003c n3 … u003c n10. How many triplets of these numbers (n1, n2, n3), (n2, n3, n4), … can be generated such that in each that in each triplet the first number is always less than the second number, and the second number is always less than the third number?
A.	45
B.	90
C.	120
D.	180
Answer» E.

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