Question

Find the
Nth term and 12th term of AP 3,5, 7, 9, 11....​

Answer 1

3, 5, 7, 9, 11............

frist term, a = 3

common difference, d = 2

12th term

a12 = a + 11d

a12 = 3 + 11×2

a12 = 3 + 22

a12 = 25

nth term

an = a + ( n – 1 ) d

an = 3 + ( n – 1 ) 2

an = 3 + 2n – 2

an = 1 + 2n

Answer 2

Step-by-step explanation:

Tn=? n=12 a=3 d=5-3=2

Tn=a+(n-1)d

Tn=3+(12-1)2

Tn=3+(11)2

Tn=3+22

Tn=25