Problems on LCM & HCF Mcqs


Q.  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?

a. 26 min 18 sec
b. 42 min 36 sec
c. 45 min
d. 46 min 12 sec


ANSWER: See Answer
 
L.C.M of 252, 308 and 198 = 2772

So, A, B and C will again meet at the starting point in 2772 sec, i.e., 46 min 12 sec.
MCQs:  The G.C.D of 1.08, 0.36 and 0.9 is________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Find the lowest common multiple of 24, 36 and 40.
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Find the highest common factor of 36 and 84.
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  H.C.F of 4 * 27 * 3125, 8 * 9 * 25 * 7 and 16 * 81 * 5 * 11 * 49 is___________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  1095/1168 when expressed in simplest form is:
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Which of the following has most number of divisors?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  252 can be expressed as a product of primes as_______________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A drink vendor has 80 liters of Maaza, 144 liters of Pepsi and 368 liters of Sprite. He wants to pack them in cans, so that each can contains the same number of liters of a drink, and doesn’t want to mix any two drinks in a can. What is the least number of cans required?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A room is 6 meters 24 centimeters in length and 4 meters 32 centimeters in width. Find the least number of square tiles of equal size required to cover the entire floor of the room?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Find the greatest number that, while dividing 47, 215 and 365, gives the same remainder in each case?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Find the greatest number which, while dividing 19, 83 and 67, gives a remainder of 3 in each case?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Find the greatest number that exactly divides 35, 91 and 840?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Find the lowest 4-digit number which when divided by 3, 4 or 5 leaves a remainder of 2 in each case?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Find the greatest 4-digit number exactly divisible by 3, 4 and 5?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Find the smallest number which when increased by 5, divisible by 6, 9, 15, 20 and 24?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A gardener was asked a plant flowers in a row containing equal number of plants. He tried to plant 6, 8, 10 and 12 in each row, but 5 plants left in each case. When he planted 13 in a row, no plant was left. Find the number of plants with him?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  The cost price of an article is 64% of the marked price. Calculate the gain percent after allowing a discount of 12%.
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A trader marked the selling price of an article at 10% above the cost price. At the time of selling, he allows certain discount and suffers a loss of 1%. He allowed a discount of :
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A trader mixes 26 kg of rice at Rs. 20 per kg with 30 kg of rice of other variety at Rs. 36 per kg and sells the mixture at Rs. 30 per kg. His profit percent is:
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  When a plot is sold for Rs. 18,700, the owner loses 15%. At what price must that plot be sold in order to gain 15%?
Category: Mathematics Quizzes,   Published by: teswesm