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प्रश्न
Find the 8th term of the A.P. whose first term is 7 and common difference is 3.
उत्तर
First term (a) = 7
and common difference (d) = 3
A.P. = 7, 10, 13, 16, 19, …
T8 = a + (n – 1)d
= 7 + (8 – 1) x 3
= 7 + 7 x 3
= 7 + 21
= 28
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