Question Text
Question 1 :
Three bells begin tolling at the same time and continue to do so at intervals of 21, 28 and 30 seconds respectively. The bells will toll together again after
Question 2 :
Product of two co-prime numbers is 117. Their LCM should be
Question 3 :
The numbers 11284 and 7655, when divided by a certain number of three digits, leave the same remainder. Find that number of three digits.
Question 4 :
HCF of first 200 prime numbers which are of the form 10p+1 is
Question 5 :
Three numbers are in the ratio 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F is
Question 6 :
One pendulum ticks 57 times in 58 seconds and another 608 times in 609 seconds. If they started simultaneously, find the time after which they will tick together.
Question 7 :
The LCM and HCF of two numbers are 84 and 21, respectively. If the ratio of two numbers be 1: 4, then the larger of the two numbers is:
Question 8 :
Four runners started running simultaneously from a point on a circular track they took 200 sec, 300 sec, 360 sec and 450 sec to complete one round, after how much time do they meet at the starting point for the first time?
Question 9 :
The ratio of two numbers is 3 : 4 their HCF is 4. Their LCM is:
Question 10 :
The HCF and LCM of two numbers are 11 and 385 respectively. If one number lies between 75 and 125, then that number is