Online practise test contains 15 random questions. Read the questions carefully and check the relevant options. After submitting, your test will be processed and results will be displayed.



1)

Product, of two co-prime numbers is 117. Their L.C.M. should be :









2)

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









3)

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









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)

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 ?









6)

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









7)

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 :









8)

The H.C.F. of 204, 1190 and 1445 is :









9)

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









10)

252 can be expressed as a product of primes as :









11)

Four different electronic devices make a beep after every 30 minutes, 1 hour, 1.5 hour
and 1 hour 45 minutes respectively. All the devices beeped together at 12 noon. They will again beep together at :









12)

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









13)

Let N be the greatest number that will divide 1305, 4665 and 6905, leaving the same remainder in each case Then sum of the digits in N is :









14)

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 :









15)

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 :