Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

In a G.P., the $3^{\text {rd}}$ term is 24 and the $6^{\text {th}}$ term is 192. What is its $10^{\text {th}}$ term?

Options:

3972

3172

3252

3072

Correct Answer:

3072

Explanation:

Let the first term is a and the common ratio is r

Then,

ar2= 24 ........... (i)

and ar5= 192 ........... (ii)

Dividing (ii) by (i), we get

ar5/ar2 = 192/24

r3 = 8

r = 2

Now,

ar2 = 24

⇒a × 22 = 24

⇒a = 6

Thus the 10th term will be ar9 = 6×29 = 3072