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Is 68 a term of the A.P. 7, 10, 13, .....?

Answer»

a = 7, d = 3

An = a + (n – 1) d

68 = 7 + (n – 1) 3

68 = 4 + 3n

3n = 64

Since, 64 is not divisible by 3

Therefore, 68 isn’t the term of the given A.P.



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