6 The sum of two numbers is 528 and their H .C.F. is 33. The number of pairs of numbers satisfying the above conditions is : A) 4 B) 6 C) 8 D) 12
7 The LCM of two numbers is 45 times their HCF. If one of the numbers is 125 and the sum of HCF and LCM is 1150, the other number is : A) 215 B) 220 C) 225 D) 235
8 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
9 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
10 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
11 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
12 The smallest number which when diminished by 7, is divisible by 12, 16, 18 and 21 ?. A) 1008 B) 1015 C) 1022 D) 1032
13 Find the least number which when divided by 16, 18, 20 and 25 leaves 4 as remainder in each case, but when divided by 7 leaves no remainder. A) 17004 B) 18000 C) 18002 D) 18004
14 Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ? A) 4 B) 10 C) 15 D) 16
15 252 can be expressed as a product of primes as : A) 2 x 2 x 3 x 3 x 7 B) 2 x 2 x 2 x 3 x 7 C) 3 x 3 x 3 x 3 x 7 D) 2 x 3 x 3 x 3 x 7
