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Maths-

General

Easy

Question

In $capital delta A B C comma$ $capital sigma a to the power of 3 end exponent blank c o s blank$ (B-C) $equals$

abc
$2 a b c$
$3 a b c$
$0$

The correct answer is: $3 a b c$

$A equals B equals C equals 6 0 to the power of 0 end exponent comma$ $a equals b equals c equals 1$

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