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Check wether the givensequence are in AP or not 4, 15 19, 23........ |
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Answer» Answer: a=4 d= A2 - a1 = 15-4 = 11 d= A3 - a2 = 19-15 = 4 d= a4 - a3 = 23-19 = 4.... As a2-a1 doesn't EQUAL to a3-a2...... It doesn't FORM an AP..... |
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