Problems on LCM & HCF Mcqs

Q.  The smallest fraction, which each of 6/7, 5/14, 10/21 will divide exactly is_________?

a. 30/7
b. 30/98
c. 60/147
d. 50/294


ANSWER: See Answer
 
Required fraction = L.C.M of 6/7, 5/14, 10/21

= (L.C.M of 6, 5, 10) / (H.C.F of 7, 14, 21) = 30/7
TasDia Network - Mcqs | Signature | Lyrics
MCQs:  H.C.F of 4 * 27 * 3125, 8 * 9 * 25 * 7 and 16 * 81 * 5 * 11 * 49 is___________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  1095/1168 when expressed in simplest form is:
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Which of the following has most number of divisors?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  252 can be expressed as a product of primes as_______________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
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: T-Code Scripts
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: T-Code Scripts
MCQs:  Find the greatest number that, while dividing 47, 215 and 365, gives the same remainder in each case?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
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: T-Code Scripts
MCQs:  Find the greatest number that exactly divides 35, 91 and 840?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
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: T-Code Scripts
MCQs:  Find the greatest 4-digit number exactly divisible by 3, 4 and 5?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Find the smallest number which when increased by 5, divisible by 6, 9, 15, 20 and 24?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
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: T-Code Scripts
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: T-Code Scripts
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: T-Code Scripts
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: T-Code Scripts
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: T-Code Scripts
MCQs:  On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A dealer marks his goods 20% above cost price. He then allows some discount on it and makes a profit of 8%. The rate of discount is:
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A cloth merchant has announced 25% rebate in prices. If one needs to have a rebate of Rs. 40. Then how many shirts each costing Rs.32 he should purchase?
Category: Mathematics Quizzes,   Published by: T-Code Scripts