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HCF And LCM Of Numbers
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Four different electronic devices make a beep after every 30 minutes, 1 hour, 3/2 hour and 1 hour 45 minutes respectively. All the devices beeped together at 12 noon. They will again beep together at:
The least multiple of 7, which leaves a remainder of 4. when divided by 6, 9, 15 and 18 is:
L.C.M. of two prime numbers x and y (x > y) is 161 The value of 3y â€“ x is:
The L.C.M. of two numbers is 48. The numbers are in the ratio 2:3. the sum of the numbers is:s:
The least number which when divided by 5, 6, 7 and 8 leaves a remainder 3, but when divided by 9 leaves no remainder, is:
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:
The H.C.F. of two numbers is 12 and their difference is 12. The numbers are:
Find the greatest number that will divide 43, 91 and 183 so as to leave the same remainder in each case.
The smallest number which when diminished by 7, is divisible by 12, 16, 18, 21 and 28 is:
The least number, which when divided by 12, 15, 20 and 54 leaves in each case a remainder of 8, is:
The H.C.F. and L.C.M. of two numbers are 84 and 21 respectively. If the ratio of the two numbers is 1:4, then the larger of the two numbers is:
Find the least multiple of 23, which when divided by 18, 21 and 24 leaves remainders 7, 10 and 13 respectively.
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?
The largest four â€“ digit number which when divided by 4, 7 or 13 leaves a remainder of 3 in each case, is
The L.C.M. of three different numbers is 120. Which of the following cannot be their H.C.F.?
Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?
The least number, which when divided by 48, 60, 72, 108 and 140 leaves 38, 50, 62, 98 and 130 as remainders respectively, is:
The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:
Let the least number of six digits, which when divided by 4, 6, 10 and 15, leaves in each case the same remainder of 2, be N. The sum of the digits in N is:
The greatest possible length which can be used to measure exactly the lengths 7 m, 3 m 85 cm, 12 m 95 cm is:
The greatest number of four digits which is divisible by 15, 25, 40 and 75 is:
The least number of five digits which is exactly divisible by 12, 15 and 18, is:
The greatest number which can divide 1356, 1868 and 2764 leaving the same remainder 12 in each case, is:
What decimal of an hour is a second ?