Practice Problems on Numbers – If a lies between 2 and 3, both included, and b lies between 4 and 6, both included, then what is the ratio of minimum and maximum limits of a2-b2?
Practice Problems on H.C.F and L.C.M – What is the highest power of 12 that divides 54!?
Practice Problems on H.C.F and L.C.M – There are three numbers, these are co-prime to each other are such that the product of the first two is 551 and that of the last two is 1073. What will be the sum of three numbers :
Practice Problems on H.C.F and L.C.M – The G.C.D. of 1.08, 0.36 and 0.9 is:
Practice Problems on H.C.F and L.C.M – The G.C.D. of 1.08, 0.36 and 0.9 is:
Practice Problems on H.C.F and L.C.M – The L.C.M. of two numbers is 4800 and their G.C.M. is 160. If one of the numbers is 480, then the other number is:
Practice Problems on H.C.F and L.C.M – The product of two numbers is 16200. If their LCM is 216, find their HCF.
Practice Problems on H.C.F and L.C.M – What will be obtained if 8 is subtracted from the HCF of 168, 189, and 231?
Practice Problems on H.C.F and L.C.M – The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is:
Practice Problems on H.C.F and L.C.M – The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is:
Practice Problems on H.C.F and L.C.M – A and B start together from the same point on a circular track and walk in the same direction till they both again arrive together at the starting point. A completes one circle in 224 s and B in 364 s. How many times will A have passed B?
Practice Problems on H.C.F and L.C.M – Four bells begin to toll together and then each one at intervals of 6 s, 7 s, 8 s and 9 s respectively. The number of times they will toll together in the next 2 hr is:
Practice Problems on H.C.F and L.C.M – The largest four digit number which is a multiple of 8, 10,12 and 15 is:
Practice Problems on H.C.F and L.C.M – The greatest number that will divide 63, 138 and 228 so as to leave the same remainder in each case:
Practice Problems on H.C.F and L.C.M – The least perfect square number which is exactly divisible by 3, 4, 7, 10 and 12 is: