HCF and LCM - Shortcuts & Tricks for Placement Tests, Job Interviews & Exams

Crack the quantitative aptitude section of Placement Test or Job Interview at any company with shortcuts & tricks on HCF and LCM. Extremely helpful to crack entrance exams like MBA, Banking – IBPS, SBI, UPSC, SSC, Railways etc.

Our Websites:

#HCFAndLCM #QuantitativeAptitude #PlacementTest

0:00 Quantitative Aptitude
5:31 LCM Least Common Multiple
10:33 Quickly find LCM & HCF
25:37 What greatest number divides 17, 42 and 93 and leaves remainders 4, 3 and 15, respectively?
30:20 What least number when divided by 36, 24 and 16 leaves 11 as remainder in each case?
39:53 The ratio of two numbers is 5:6 and their LCM is 480, then their HCF is
44:31 What largest number will divide 47,35 and 27 leaving same remainder in each case? What will be the common remainder?
46:59 There are 3 equilateral triangles with sides 114 cm, 76 cm and 152 cm. What maximum size scale can measure them exactly?
52:39 5 clocks ring automatically at intervals of 12 minutes, 8 minutes, 3 minutes, 4 minutes and 10 minutes, respectively. In 8 hours from the moment they start, how many times will they ring
57:03 3 cyclists cycle along the circumference of a jungle. They complete one round in 27 minutes, 45 minutes and 63 minutes respectively. Since they start together, when will they meet again
58:46 Manoj wants to paste wallpaper on wall of his room. The wall is 4 meters and 50 cm in length and 3 meters and 50 cm in height. But the wall should be covered completely only by square pieces of wallpaper having same size. What is the number of maximum sized wallpaper squares needed to cover the walls

[nishkaveluvali]

Thank you for a great session and helping us to gain knowledge.
But in second question it should be 27 as a divisor for 135, so the answer obtained is 12/ 1350.

[sreelakshmigopinath]

Second question is wrong.
Ans is 12/1350
(135/5=27 not 29)

[DEEPIKASMMA]

The answer for question 2 is, 12/1350 because LCM = 1350 and HCF = 12.

[paras]

Friendly way of teaching just like teaching in classroom.Thank you so much sir from bottom of heart for such lovely tutorials.

[shreedharbadiger]

i appreciate the hardwork you have put in this video to make the concepts clear. In second question the LCM of denominator is 1350. so that the ans is 12/1350.

[srivishnu]

this channel was recommended by our institute really awesome videos i feel instead paying fees in my institute would have watched your videos before

[shivangipandey]

The best thing in your teaching is that you start from the very basic and then go for tricks so that the base become stronger.... thankyou so much for your efforts ❤️

[deepakrevidagar]

In 2nd question of finding hcf of 36/75, 48/150, 72/135 .

LCM of (75, 150, 135) = 1350 because all those are divisible by 15. So the answer is 12/1350.

[osmanhussain]

There were some mistakes in the exedcution but the concepts and methods dicussed were very accurate and good. Well done

[shivharivenkatesh]

Just this one playlist and all topics are thoroughly covered with variety of questions
Thank you so much

[KD-xiwu]

51:47 When you put x= 4 to X^2-8X+15 it will never be 0.

[farmanwali]

Thank You for your efforts, Sir. In Q3, the remainder of 93/13 is not 15 as 13 * 7 = 91 and we get the remainder as 2. I think there is a problem with the question as HCF would be 13 only when the remainders are 4, 3, 2. Please correct me if I am wrong.

[omvighneshkoyande]

Learned so many tricks that I am sure I wont remember when to use which in exams😅

[jayrathod]

If anyone wants to understand what just happened in 44:30 question no 9.

suppose, the common remainder is k and HCF is x.

47 = ax + k
35 = bx + k
27 = cx + k

we cant calculate HCF x of 47, 35, 27 because we don't know the remainder k

so 47 - 35 = 12 = (a-b)x, 35 - 27 = 8 = (b-c)x, 27 - 47 = -20 = (c-a)x
and HCF of all this 12, 8 and 20 has HCF x and it is free from remainder k

[yashrajtalks]

CareerRide is my new learning platform. Great Going .. pls don't change the way of teaching. many channels cover in just 10 to 15 min which helps nothing.
loved this video.. starting from basics and covered each type of question. Thanks alot

[lastairbender]

Sir, ur teaching is very useful to us.And, in the 2nd sum, I think the lcm of 135 is 27

[independentcreativity]

This channel is free to understand concept but still ur society is not seeing the good side still sending comments on the small multiplication mistake.For those people i would like to say "SAALE AGAR ITNI HI ATA HAI TO KHUD KAR LE"

[utkarshtripathi]

best class i ever attended...of hcf and lcm

[vaibhavi]

Thanqew for your wonderful teaching!😻
The methods, tricks are so wonderful!!
But the main thing is you have a catchy voice!! Very pleasant!!!😍🎶

[govardhanyadav]

I am really thankful for your efforts of helping students.I learnt a great deal from you, as I was struggling before finding your channel