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Aliun [14]
3 years ago
10

Use the formula for nCr to evaluate the given expression.

Mathematics
1 answer:
LenaWriter [7]3 years ago
3 0

Answer:

351

Step-by-step explanation:

27C2 = 27! / 2! × (27-2)!

= 27×26×25! / 2×1 × 25!

= 27×26 /2

= 27×13

= 351

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