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Question
Which of the following pairs of integers have 9 as difference?
(a) 19, 10 (b) − 19, − 10 (c) 19, − 10 (d) (a) and (b) both
(a) 19, 10 (b) − 19, − 10 (c) 19, − 10 (d) (a) and (b) both
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Solution
(a) 19 − 10 = 9
(b) − 10 − (− 19) = − 10 + 19 = 19 − 10 = 9
(c) 19 − (− 10) = 19 + 10 = 29
Thus, (a) and (b) both are correct.
Hence, the correct option is (d).
(b) − 10 − (− 19) = − 10 + 19 = 19 − 10 = 9
(c) 19 − (− 10) = 19 + 10 = 29
Thus, (a) and (b) both are correct.
Hence, the correct option is (d).
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