# If there are 10 positive real numbers n1 < n2 < n3 … < 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

#### Comments and Answers (2)

**Andy** * *

What is the correct solution?

**Priya** * *

does anyone know the correct answer

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