JAMB - Mathematics (2009 - No. 18)

If m * n = n - (m+2) for any real number m and n find the value of 3*(-5)?

-6

-8

-10

-12

הֶסבֵּר

m * n = n - (m+2)
= -5 - (3+2)
= -5-5
= -10

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