Question

The (n – 1)th term of an A.P. is given by 7,12,17, 22,… is
(a) 5n + 2
(b) 5n + 3
(c) 5n – 5
(d) 5n – 3


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Answer 1

Answer:

d) 5n-3

this is the answer

hope it is useful for you

Answer 2

Answer:

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==> 5n - 3

Explanation -,-

Explaination:Reason: Here a = 7, d = 12-7 = 5

∴ A n-1 = a + [(n – 1) – l]d = 7 + [(n – 1) -1] (5) = 7 + (n – 2)5 = 7 + 5n – 10 = 5M – 3