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Find the common difference if a27th - a7th =84 |
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Answer» D= 4.2 It is 26d+6d... a+26d - a+6d=8426d-6d=8420d=84d=4.2 A27-a7=84A+26d-a+6d=8432d=84D=84/32D=21/8 |
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