23. If C(n,2)-C (n.1) = 35, then the value of n is(a) 10(b) 3(c) — 3 (d) –


23.
If C(n,2)-C (n.1) = 35, then the value of n is(a) 10(b) 3(c) — 3 (d) – 10bОО​


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