. Which of the following is not true? (a) (7 + 8) + 9 = 7 + (8 + 9) (b) (7 × 8) × 9 = 7 × (8 × 9) (c) 7 + 8 × 9 = (7 + 8) × (7 + 9) (d) 7 × (8 + 9) = (7 × 8) + (7 × 9)
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Q- B one is wrong (7×8)×9= 7×(8×9)
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