Question : What is the third proportional number to 10 and 20?
Option 1: 30
Option 2: 25
Option 3: 50
Option 4: 40
Answer (1)
17th Jan, 2024
Correct Answer: 40
Solution :
Let the third proportional be $x$.
So, $a:b::b:x$
⇒ $10:20::20:x$
⇒ $\frac{10}{20}=\frac{20}{x}$
⇒ $x=\frac{400}{10}$ = 40
Hence, the correct answer is 40.
Comments (0)
Related Questions
Know More about
Staff Selection Commission Combined Grad ...
Result | Eligibility | Application | Selection Process | Preparation Tips | Admit Card | Answer Key
Get Updates Brochure
Thank You!
Your Staff Selection Commission Combined Graduate Level Exam brochure has been successfully mailed to your registered email id “”.
Upcoming Exams
Application Date:
9 Dec, 2024
- 30 Dec, 2024
Application Date:
2 Dec, 2024
- 31 Dec, 2024
Exam Date:
3 Jan, 2025
- 16 Jan, 2025
Admit Card Date:
23 Dec, 2024
- 5 Jan, 2025
Application Date:
15 Dec, 2024
- 5 Jan, 2025
