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1)

The H.C.F. and L.C.M of two numbers are 11 and 385 respectively. If one number lies between 75 and 125, then that number is :









2)

The least number of five digits which is exactly divisible by 12, 15 and 18, is :









3)

The smallest number which when diminished by 7, is divisible by 12, 16, 18 and 21 ?.









4)

Three numbers which are co-prime to each other are such that the product of the first two is 551 and that of the last two a 1073. The sum of the three numbers is :









5)

Which of the following has most number of divisors ?









6)

Three numbers are in the ratio 1:2:3 and their H.C.F. is 12. The numbers are :









7)

The product of the L.C.M. and H.C.F of two numbers is 24. The difference of two numbers is 2. Find the numhers









8)

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 :









9)

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 :









10)

The H.C.F. of 2/3,  8/9,  64/81 and 10/27 is :









11)

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 ?









12)

The H.C.F. of 1.75, 5.6 and 7 is :









13)

252 can be expressed as a product of primes as :









14)

Three different containers contain 496 litres, 403 litres and 713 litres of mixtures of milk and water respectively. What biggest measure can measure all the different quantities exactly ?









15)

The L.C.M. of 22, 54, 108, 135 and 198 is :