If 420 ! 21 * 201 = -181 and 728 ! 26 * 905 = -877, then what is the value of 56 ! 2 * 367?
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Correct answer: A
Explanation
Just as
420 ! 21 * 201 = -181
420 ÷ 21 = 20
20 − 201 = −181
and
728 ! 26 * 905 = -877
728 ÷ 26 = 28
28 − 905 = −877
Similarly,
56 ! 2 ∗ 367
56 ÷ 2 = 28
28 − 367 = −339