The L.C.M. of 22, 54, 108, 135 and 198 is :
The L.C.M. of two numbers is 45 times their H C.K. If one of the numbers is 125 and the sum of H.C.F. and L.C.M. is 1150, the other number is :
Which of the following is a pair of co-primes ?
Product, of two co-prime numbers is 117. Their L.C.M. should be :
The maximum number of students among them 1001 pens and 910 pencils can be distributed in such a way that each student gets the same number of pens and same number of pencils is :
The H.C.F. of 1.75, 5.6 and 7 is :
A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 2.ri2 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 noint ?
H.C.F. of 4 x 27 x 3125, 8 x y x 25 x 7 & 16 x 81 x 5 x 11 x 49 is :
Four different electronic devices make a beep after every 30 minutes, 1 hour, 1.5 hourand 1 hour 45 minutes respectively. All the devices beeped together at 12 noon. They will again beep together at :
The sum of two numbers is 528 and their H .C.F. is 33. The number of pairs of numbers satisfying the above conditions is :
The product of the L.C.M. and H.C.E of two numbers is 24. The difference of two numbers is 2. Find the numhers
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 ?
Find the least number which when divided by 16, 18; 20 and 25 leaves 4 as remainder in each case, but when divided by 7 leaves no remainder.
The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one or the numbers is 275, then the other is :
252 can be expressed as a product of primes as :
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