find the 7th term from the end of the AP 7, 10, 13....... 784
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Solution :-
➜ Given
- a1 = 7
- d = 10-7 = 3
- Last term (An) = 784
➜ Identity used
- An = a1 + (n-1)d
➤ a7 = 7 + (7-1)3
➤ a7 = 7 + 18
➤ a7 = 25
✷ Therefore the 7th term is 25.
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