Question

find the 12th term of G.P whose 5th term is 192 and common ratio = 2.​

Answer 1

Answer:

r=2

a

8

=a

1

(2)

8−1

192=a

1

(2)

7

192=a

1

(2)

7

2

7

192

=a

1

2

7

192

×2

12−1

=a

12

2

7

192

×2

11

=a

12

a

12

=192×2

4

a

12

=3072

Answer 2

QUESTION:

• find the 12th term of G.P whose 5th term is 192 and common ratio = 2.

ANSWER:

a12 = ?

a5= 192 , d =2 (GIVEN)

a5= a + 4d

192 = a +4(2)

a = 184

a12 = a + 11d

= 184 + 11(2)

= 206 ( Answer)