find the 14th term of the AP 7, 2,-3,-8......
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Solution :-
- a = 7
- d = 2 - 7 = - 5
- n = 14
→ an = a + (n - 1) × d
→ a14 = 7 + (14 - 1) × (-5)
→ a14 = 7 + 13 × (-5)
→ a14 = 7 - 65
→ a14 = - 58
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