SSC MTS Number System Questions
2 questions on Number System for SSC MTS, including questions from 2024 papers. Each comes with the correct answer and a worked explanation.
- Questions
- 2
- Moderate
- 2
Number System questions with solutions
The HCF and LCM of two numbers are 3 and 63 respectively. If one of the numbers is 9, what is the other number?
- (A)18
- (B)21
- (C)24
- (D)7
Show answer and explanation
Correct answer: (B) 21
For any two numbers, product of the numbers = HCF × LCM. So the other number = (3 × 63) ÷ 9 = 189 ÷ 9 = 21.
Shortcut: Other number = HCF × LCM ÷ given number.
The HCF and LCM of two numbers are 5 and 150 respectively. If one of the numbers is 25, what is the other number?
- (A)35
- (B)25
- (C)30
- (D)6
Show answer and explanation
Correct answer: (C) 30
For any two numbers, product of the numbers = HCF × LCM. So the other number = (5 × 150) ÷ 25 = 750 ÷ 25 = 30.
Shortcut: Other number = HCF × LCM ÷ given number.
Frequently asked questions
How many SSC MTS Number System questions can I practise here?
2 questions — 2 moderate. 2 are shown on this page with answers and explanations, and the practice set draws from all of them.
How should I practise Number System for SSC MTS?
Read through a few solved questions first to see the method, then take a timed practice set. Afterwards, check which questions you got wrong or spent longest on and redo those before moving on.