Search Placementyogi.com
 

HCF and LCM Aptitude MCQ and Answers for interview

1

The HCF of 3240 , 3600 and a third number is 36 and the LCM is 2x 35 x 52 x 72.

Find the number.

A.

22 x 35 x 72

B.

22 x 53 x 72

C.

25 x 52 x 72

D.

23 x 35 x 72

See Answer & Explanation Lets Discuss
Correct answer is : A
Explanation

This is one of the best Questions on HCF and LCM,

Try to grasp it properly!

3240 = 2x2x2x3x3x3x3x5 = 2x 3x 5

3600 = 3x3x2x2x2x2x5x5 = 24 x 3x 52

HCF of 3240 and 3600 and = 23 x 32 

So the third number must have (23 x 32 )    ---------- (1)

The LCM of the three numbers is  24 x 35 x 52 x  72.

LCM is the product of all the common prime factors raised to their highest power.

and out of the LCM 24 x  52  is taken from the first two numbers,

It means the third number must contain the remaining factors in the LCM i .e.  35 x  72  ------(2)

 

Using (1) and (2), we get the third number as :

23 x 35 x  72 .

 
 

Banner to LogicGuns.com

Hide Page Information

HCF and LCM Aptitude MCQ and Answers with Explanation

HCF and LCM Aptitude MCQ and Answers for Government Sector job preparation. HCF and LCM Aptitude Objective Questions are very important for exams like CAT,MAT,XAT, SSC IBPS, Bank PO, BPSC, UPSC, Govt Jobs, Bank Clerk , UPPSC etc.

How should we start preparing for HCF and LCM Aptitude?

To prepare for HCF and LCM Aptitude you should start practising HCF and LCM Objective Questions from Questions Banks and Aptitude Books.

How important is HCF and LCM Aptitude MCQ in Exams?

The HCF and LCM Aptitude MCQ paper is very important as almost all the exams ask gk questions. HCF and LCM Aptitude questions are even asked in interview round.

Where can I practice HCF and LCM Aptitude Objective Questions and MCQ?

Here at placementyogi.com we have a good collection of GK Objective Type Questions that can help you to practise Multiple Choice Questions on HCF and LCM Aptitude. Many of these Objective questions will get repeated in government sector exams and will help you in preparing for the HCF and LCM Aptitude paper.