Your friend evaluates the expression. Is your friend correct? Explain your reasoning.
$- 2.2 \times (- 3.7) = - 8.14$

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Solution

We know that, product of two integers with same sign is always positive.
The given expression is $- 2.2 \times (- 3.7) = - 8.14$
Here, both the integers have same sign but the product is negative.
Hence, evaluation of my friend is incorrect. The correct answer will be $+ 8.14$ .

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