The number of pairs of positive integers whose sum is 99 and HCF is 9 is: 

A General of an Army wants to create a formation of square from 36562 army men. After arrangement, he found some army men remained unused. 

If the product of three consecutive numbers is 210 then the sum of the smaller numbers is: 

The greatest number that divides 411, 684, 821 and leaves 3, 4 and 5 as remainders, respectively, is 

If the product of three consecutive numbers is 210 then sum of the smaller number is: 

Find the greatest number that will divide 390, 495 and 300 without leaving a remainder. 

There are 24 peaches, 36 apricots and 60 bananas and they have to be arranged in several rows in such a way that every row contains the same number of fruits of only one type. What is the minimum number of rows required for this to happen? 

A fraction becomes $${1\over 6}$$ when 4 is subtracted from its numerator and 1 is added to its denominator. If 2 and 1 are respectively added to its numerator and the denominator, it becomes $${1\over 3}$$. Then, the LCM of the numerator and denominator of the fraction, must be