Question

Find the number of terms in the A.P;
7,13,19,.............,205.​

Answer 1

Answer:

7,13,19...........205

first term = 7

common difference = 13 -7= 6

last term = 205

according to questions:-

Tn = a + (n - 1)d

putting the value

205 = 7 + (n -1)6

205 - 7 = (n - 1)6

198 = (n -1) 6

198/6 = n - 1

33 = n - 1

33 + 1 = n

34 = n

number of times is 34.

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