which of the following computation is correct? i. -2+2=0 ii. /-5/ - 1=6 iii. 15 ÷ (-3) = -5 iv. (-2) (-2) (-2) = -8
a. i and ii only b. i, ii, and iii only c. i, iii, and iv only d. all of these
a. i and ii only b. i, ii, and iii only c. i, iii, and iv only d. all of these
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Answer:
C. i , iii, iv only
why?
i. -2 + 2 = 0 (correct, since they have different signs and have the same value)
ii. (-5) - 1 = 6 (wrong, the correct answer is 5)
iii. 15/-3 = -5 (correct, copy the sign of the larger integer and divide thu, the answer is -5)
iv. (-2) (-2) (-2) = -8 (correct, since the number of integers are odd thus, having 8 in negative (-8)
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