1. The LCM of two numbers is 936. If their HCF is 4 and one of the number is 72, the other number is :
   1.   42
   2.   52
   3.   62
   4.   None Of These
2. Two numbers are in the ratio of 17:13. If their HCF is 15, what are the numbers?
   1.   255,195
   2.   230,450
   3.   both a and b
   4.   none of these
3. A forestor wants to plant 44apple trees, 66 banana trees and 110 mango tree in equal rows. Also he wants to make distinct rows of trees (i.e. one type of tree in one row). The minimum number of rows that are required is :
   1.   10
   2.   2
   3.   8
   4.   none of these
4. Which of the following is the largest 4 digit number that can be added to 7249 in order to make the derived number divisible by each of 12, 14, 21, 33 and 54.
   1.   9123
   2.   9383
   3.   8727
   4.   none of these
5. The least perfect square that is divisible by 11,10,8,6,4,3 is :
   1.   435600
   2.   485200
   3.   985000
   4.   20000
6. Find the HCF of (5^125-1) and (5^35-1)
   1.   5^5-1
   2.   6585
   3.   5^9-1
   4.   7887
7. The Greatest number that will divide : 4126, 4003, 4249
   1.   43
   2.   41
   3.   45
   4.   none of these
8. The HCF of two numbers is 11, and their LCM is 616. If one of the numbers is 88 then other is :
   1.   77
   2.   88
   3.   99
   4.   11
9. The smallest square number, which is exactly divisible by 2,3,4,9,6,18,30and 60 is ;
   1.   900
   2.   3600
   3.   400
   4.   16
10. Find the greatest number, which will divide 215, 167 and 135 so as to leave the same remainder.
    1.   16
    2.   85
    3.   24
    4.   5