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.
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 :
The H.C.F. of 3666 and 3444 is :
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 :
252 can be expressed as a product of primes as ;
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 :
Product, of two co-prime numbers is 117. Their L.C.M. should be :
The H.C.F. of 2/3. 8/9. 64/81 and 10/27 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 ?
Which of the following is a pair of co-primes ?
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 ?
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 :
The least rubber which is a perfect square and is divisible bv each of the numbers Jo, 20 and 24, is :
The L.C.M. of 22, 54, 108, 135 and 198 is :
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 :
The H.C.F. of 204, 1190 and 1445 is :