Question

in an A.P,the first term is 2 and the 5 term is 18.find the 13tern​

Answer 1

Answer:

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Step-by-step explanation:

Let a be the first term and d be the common difference of the A.P.

Now, 1st term of the A.P., a = 2 ... (1)

Also, 5th term of the A.P. = a+4d=18 ... (2)

Pitting value of a in (2)

a+4d=18

2+4d=18

4d=18-2

4d=16

d=16/4

d=4

Now, 13th term = a+12d

⇒2+12(4)

⇒2+48

⇒50

Hence, 13th term is 50