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-10-87=-77; 05. A3, 8,13, 18 ... का कौन-सा पद 78 है? छि!कड़े गये « ७ ५ ४.13 18. ..... को प्रथम 9

Answer»

For AP 3, 8, 13, 18....a = 3, d = 8 - 3 = 5

nth term of an APTn = a + (n - 1)d

Let mth term of given AP is 78Then,78 = 3 + (m-1)*578 - 3 = 5m - 55m = 80m = 80/5 = 16

Therefore, 16th term of AP is 78



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