# 1000+ Aptitude Questions and Answers for IT Companies - 1

Question: 1

Three numbers are in the ratio 1 : 2 : 3 and their HCF is 12. The numbers are

(A) 4, 8, 12

(B) 5, 10, 15

(C) 12, 24, 36

(D) 10, 20, 30

Ans: C

Given ratio of numbers = 1 : 2 : 3

Their HCF = 12

∴ Numbers are 12, 24 and 36.

Question: 2

Three bells ring together and they will ring at intervals of 6 seconds, 7 seconds and 8 seconds respectively. After what interval will they again ring together?

(A) 164 seconds

(B) 168 seconds

(C) 174 seconds

(D) 178 seconds

Ans: B

Since the bells ring at the intervals of 6 seconds, 7 seconds and 8 seconds, respectively next time, they will ring together after an interval equal to the LCM of 6, 7 and 8 seconds.

∴ The required time = LCM of 6, 7 and 8 seconds = 168 seconds.

Question: 3

The LCM of 2^{2} × 3^{2} × 5 × 11, 2^{4 } × 3^{4} × 5^{2} × 7

and 2^{5} × 3^{3} × 5^{2} × 7^{2} × 11 is

(A) 2^{3} × 3^{2} × 5

(B) 2^{5} × 3^{4} × 5^{2}

(C) 2^{3} × 3^{2} × 5 × 7 × 11

(D) 2^{5} × 3^{5} × 5^{3} × 7^{2} × 11

Ans: A

LCM of 2^{2} × 3^{2} × 5 × 11, 2^{4} × 3^{4} × 5^{2} × 7 and 2^{5} × 3^{2} × 5^{2} × 7^{2} × 11

= 2^{2} × 3^{2} × 5 = 180.

Question: 4

The HCF and LCM of two numbers are 11 and 385 respectively. If one number lies between 75 and 125, then that number is

(A) 77

(B) 88

(C) 99

(D) 110

Ans: A

Given HCF = 11, LCM = 385

385 = 5 × 7 × 11

∴ Number lies between 75 and 125 = 7 × 11 = 77.

Question: 5

The HCF of two numbers is 8. Which one of the following can never be their LCM?

(A) 24

(B) 48

(C) 60

(D) 56

Ans: C

Given HCF of two numbers = 8

LCM is completely divisible by HCF

∴ 24, 48 and 56 are completely divisible by 8, the value which can never be LCM = 60.

- 100+ LCM and HCF Questions for IBPS PO, SO, Clerk Pdf
- 100+ SBI PO Quantitative Aptitude Questions with Answers Pdf
- 1000+ Aptitude Questions and Answers for IT Companies
- 1000+ Quantitative Aptitude Questions & Answers for Competitive Exams
- 1000+ Aptitude Test Questions and Answers Pdf
- 1000+ NAB Aptitude Test Questions and Answers
- 1000+ Ethiopian Bank Interview Questions and Answers Pdf
- Maths Quantitative Aptitude Questions and Answers for Bank Exams Pdf
- 1000+ Silicon Valley Bank Aptitude Test Questions and Answers Pdf

Samacheer Kalvi 7th Civics Market and Consumer Protection Act More

Economics Questions for Class 6, 7, 8, 9, 10 More

Samacheer Kalvi 7th Social Economics Tax and Its Importance More

Natural Hazards Understanding of Disaster Management Questions More

Geography MCQ Quiz Questions for Class 7 More

TNPSC General English Questions and Answers More

Top 1000+ Verbal Reasoning Questions and Answers More

1000+ Sentence Rearrangement Questions for SSC CHSL Exam More

100+ Time and Distance Questions and Answers for SSC Exams More

1000+ Non Verbal Reasoning Questions for SSC Exams Pdf More