Math, asked by ramakanta17, 10 months ago

How to find 1×2×3×4...........100 times

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Answered by saipradk2006

1

Answer:

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Answered by Anonymous

5

$\frac {n}{2} \times [2a + (n - 1) d] \\ = \frac{100}{2} × [2 × 1 + (100 - 1) 1] \\ = 50 (2 + 99) \\ = 50 × 101 \\ = 5050$

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