Three bells toll at intervals of 12 minutes, 15 minutes and 18 minutes respectively. If they start tolling together, after what time will they next toll together?
Find HCF of 378,180 and 420 by prime factorization method. Is HCF x LCM of three numbers equal to the product of the three numbers?
An army contingent of 1000 members is to march behind an army band of 56 members in a parade. The two groups are to march in the same number of columns. What is the maximum number of columns in which they can march?
The decimal expansion of the rational number 
will terminate after how many places of decimals
a terminating or a non-terminating decimal representation
