Problems on LCM & HCF Mcqs

Q.  Five bells first begin to toll together and then at intervals of 5, 10, 15, 20 and 25 seconds respectively. After what interval of time will they toll again together?

a. 5 min
b. 5.5 min
c. 5.2 min
d. None


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  LCM of 1/3, 5/6, 5/4, 10/7 is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  LCM of 455, 117, 338 is________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  LCM of 87 and 145 is_______?
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MCQs:  LCM of 18 and 27 is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
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?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
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.
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The L.C.M. of two numbers is 48. The numbers are in the ratio 2 : 3. Then sum of the number is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Which of the following has the most number of divisors?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively, is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they meet again at the starting point?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:
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MCQs:  The least number of four digits which is divisible by 15, 25, 40 and 75 is_________?
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MCQs:  The smallest fraction, which each of 6/7, 5/14, 10/21 will divide exactly is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30?
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MCQs:  Which of the following fractions is the largest?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The H.C.F of two numbers is 23 and the other two factors of their L.C.M are 13 and 14. The larger of the two numbers is___________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The H.C.F of two numbers is 8. Which of the following can never be their L.C.M?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Product of two co-prime numbers is 117. Their L.C.M should be__________?
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MCQs:  If the sum of two numbers is 55 and the H.C.F and L.C.M of these numbers are 5 and 120 respectively, then the sum of the reciprocal of the numbers is equal to___________?
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MCQs:  The L.C.M of two numbers is 495 and their H.C.F is 5. If the sum of the numbers is 10, then their difference is__________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts