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The 7th term of the A.P is 34 and 15th term is 74. Find it's 40th term.

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T15 - T7 = 74-34 = 40 = 8d
so, d=5

T40 = T15 + 25d = 74 + 25*5 = ?

In an A.p.,t7=34 and t15=74 then t40 =

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