6 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 : A) 71 B) 81 C) 85 D) 89
7 The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one or the numbers is 275, then the other is : A) 279 B) 283 C) 308 D) 318
8 The product of the L.C.M. and H.C.F of two numbers is 24. The difference of two numbers is 2. Find the numhers A) 2 and 4 B) 6 and 4 C) 8 and 6 D) 8 and 10
9 Product, of two co-prime numbers is 117. Their L.C.M. should be : A) 1 B) 117 C) Equal to their H.C.F D) 235 E) Cannot be calculated
10 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 : A) 77 B) 88 C) 99 D) 110
11 Three different containers contain 496 litres, 403 litres and 713 litres of mixtures of milk and water respectively. What biggest measure can measure all the different quantities exactly ? A) 1 litres B) 7 litres C) 31 litres D) 41 litres
12 The maximum number of students among them 1001 pens and 910 pencils can be distributed in such a way that each student gets the same number of pens and same number of pencils is : A) 91 B) 910 C) 1001 D) 1911
13 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 : A) 4 B) 5 C) 6 D) 8
14 The least number of five digits which is exactly divisible by 12, 15 and 18, is : A) 10010 B) 10015 C) 10020 D) 10080
15 The least number which is a perfect square and is divisible by each of the numbers 10, 20 and 24, is A) 1600 B) 3600 C) 6400 D) 14400
