1) The HCF of two numbers is 25 and two nos. are 75, 125 .What is LCM?

a)375

b)275

c)495

d)385

a

2) 143/234 when expressed in lowest terms?

a)13/37

b)11/17

c)11/19

d)11/18

d

3) What is the HCF of 4/5 , 5/6 , 7/15:

a)1/30

b)1/50

c)1

d)none

a

4)What is the lowest perfect square number which is exactly divisible by 56 , 21 and 36?

a) 7050

b) 8056

c)7040

d) 8100

e)7056

e

5) Find the lowest number between 50 and 100 which is exactly divisible by 3 , 6 and 15?

a) 150

b)75

c)120

d)60

e)None of these

d

6) Find the lowest number of 5 digits which is exactly divisible by 12 , 15 and 18.

a)10080

b)10800

c)11820

d)12080

e)None of these

a

7) Find the greatest number which is such that when 12288, 19139, 28200 are divided by it , the remainders are all the same.

a) 221

b) 200

c)139

d)288

e)None of these

a

8) What number is that which when divided by 5 and the quotient again by 6 and the quotient again by 8 will give the G.C.M. of 121 and 143?

a)1380

b)1485

c)1389

d)2640

d

9) 63 , 42 , 77 litres of milk is to be measured. What should be the capacity of the measure which will do this most quickly?

a) 1

b)2

c)3

d)5

e)7

e

10) The greatest number that will divide 964 , 1238 , and 1400 leaving remainder 41, 31 and 51 respectively is:

a)51

b)61

c)71

d)81

e)None of these

c