Problems on LCM & HCF Mcqs

Q.  How many minimum number’s of whole square slabs are required for paving the floor 12.96 meters long and 3.84 meters side?

a. 216
b. 192
c. 108
d. 256


ANSWER: See Answer
 
HCF of 384, 1296 = 48

48 * 48 * x = 384 * 1296

x = 216
MCQs:  The product of two digits number is 2160 and their HCF is 12. The numbers are________?
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MCQs:  Four bells begin to toll together respectively at the intervals of 8, 10, 12 and 16 seconds. After how many seconds will they toll together again?
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MCQs:  The least number which when diminished by 7 is divisible by 21, 28, 36 and 45 is________?
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MCQs:  The least number which when add 3 to it, completely divided 8, 12 and 18 is_______?
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MCQs:  The least number which when divided by 8, 12 and 16, leave in each remainder 3, is_______?
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MCQs:  The least square number which divides 8, 12 and 18 is________?
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MCQs:  The least number which when divided by 16, 18 and 21, leave the remainder 3, 5 and 8 respectively is___________?
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MCQs:  The product of two numbers is 2025 and their HCF is 15 their LCM is____________?
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MCQs:  Find the H.C.F of 54/9, 3 9/17 and 36/51?
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MCQs:  Find the H.C.F of 204, 1190 and 1445?
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MCQs:  Find the H.C.F of 12, 16, 18 and 24?
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MCQs:  HCF of 3/16, 5/12, 7/8 is__________?
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MCQs:  LCM of 1/3, 5/6, 5/4, 10/7 is_________?
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MCQs:  LCM of 455, 117, 338 is________?
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MCQs:  LCM of 87 and 145 is_______?
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MCQs:  LCM of 18 and 27 is_________?
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MCQs:  LCM of two numbers is 138. But their (Greatest common divisor) GCD is 23. The numbers are in a ratio 1:6. Which is the largest number amongst the two?
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MCQs:  Greatest Common Divisor of two numbers is 8 while their Least Common Multiple is 144. Find the other number if one number is 16.
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MCQs:  The L.C.M. of two numbers is 48. The numbers are in the ratio 2 : 3. Then sum of the number is_________?
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MCQs:  Which of the following has the most number of divisors?
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