Aptitude Interview Questions and Answers Pdf - 2
Question: 6
The smallest number which when diminished by 7, is divisible by 12, 16, 18, 21 and 28 is
(A) 1008
(B) 1015
(C) 1022
(D) 1032
Ans: B
Required number = (L.C.M. of 12, 16, 18, 21, 28) + 7
= 1008 + 7 = 1015.
Question: 7
Three girls start jogging from the same point around a circular track and each one completes one round in 24 seconds, 36 seconds and 48 seconds respectively. After how much time will they meet at one point?
(A) 2 minutes 20 seconds
(B) 2 minutes 24 seconds
(C) 3 minutes 36 seconds
(D) 4 minutes 12 seconds
Ans: B
L.C.M. of 24, 36, 48 = 144.
So, the three girls will meet at one point in 144 seconds i.e., 2 min 24 sec.
Question: 8
What is the greatest number which divides 852, 1065 and 1491 exactly?
(A) 183
(B) 193
(C) 213
(D) 223
Ans: C
H.C.F. of 852 and 1065 is 213.
H.C.F. of 213 and 1491 is 213.
Question: 9
The traffic lights at three different road crossings change after every 48 seconds, 72 seconds and 108 seconds, respectively. If they all change simultaneously at 8:20:00 hours; then they will again change simultaneously at
(A) 8:27:48 hours
(B) 8:27:36 hours
(C) 8:27: 24 hours
(D) 8:27:12 hours
Ans: D
Interval of change = (L.C.M. of 48, 72, 108) seconds = 432.
So, the lights will change after every 432 seconds, i.e. 7 minutes and 12 seconds.
So, the next simultaneous change will take place at 8:27:12 hours.
Question: 10
Find the least number which when divided by 2, 3, 4, 5 and 6 leaves 1, 2, 3, 4 and 5 as remainders, respectively, but when divided by 7 leaves no remainder.
(A) 119
(B) 126
(C) 154
(D) 210
Ans: A
L.C.M. of 2, 3, 4, 5, 6, is 60.
One of the numbers satisfying the first condition is 60 -1 = 59.
60 + 59 = 119, etc.
But 119 is also divisible by 7.
- 100+ Problems on HCF and LCM Aptitude Questions Answers
- Top 100+ H.C.F and L.C.M Problems with Solutions Pdf
- 100+ LCM and HCF Questions and Answers for Bank Exams
- 100+ HCF and LCM Questions and Answers for Competitive Exams
- Aptitude Interview Questions and Answers Pdf
- 100+ HCF and LCM Questions and Answers for SSC Exams
- 100+ HCF and LCM Questions for SBI PO, SO, Clerk Pdf
- 100+ HCF and LCM Questions for SBI PO, SO, Clerk Pdf
- 1000+ Management Aptitude Test (MAT) Questions and Answers
- 1000+ ANZ Bank Aptitude Test Questions and Answers
- Dashen Bank Aptitude Test Questions & Answers
Basic Electronics Quiz Questions with Answers Pdf More
Wireless Communication MCQ Questions with Answers More
Digital Communication Quiz Questions and Answers Pdf More
Advanced Communication Quiz Questions and Answers Pdf More
Synchronous Machines Quiz Questions and Answers Pdf More
100+ Number System Questions for Bank PO Exams Pdf More
100+ Ratio and Proportion Questions with Solutions Pdf More
100+ Percentage Questions for IBPS PO, SO, Clerk Exams Pdf More
1000+ Logical Reasoning Questions & Answers Pdf for CAT, CLAT More
Top 100+ Statement and Assumption Online Test More