Question

$(-12)\times (+21)=$

• A. $-2412$
• B. $-242$
• C. $-252$
• D. $+252$

Answer 1

Answer: (C)

We know that the product of two integers with unlike signs is always negative.

We are given the two unlike integers, one with positive sign and one with negative sign that is $-12$ and $+21$ then the product of these integers is:

$(-12)\times (+21)=-(12\times 21)=-252$ which is a negative integer.

Hence, $(-12)\times (+21)=-252$.