1) The product of 2, two-digited nos. is 2028 and their HCF is 13. Then nos are

a) 26, 78

b) 39,52

c) 13,156

d) 36,68

b

2) The HCF & the LCM of two no’s are 50 and 250 respectively .If the first no. is divided by 2 the quotient is 50. The second no. is

a) 50

b) 100

c) 125

d) 250

c

3) The sum of two nos. is 216 and their HCF is 27 .Then no’s are

a) 27, 189

b) 54,162

c) 108,108

d) 81,189

a

4) The sum of two nos. is 528 and their HCF is 33. The no. of pairs of such no’s satisfying the above condition is

a) 6

b) 12

c) 8

d) 4

d

5) The HCF & LCM of two nos. are 44 & 64 respectively. If the first no. is divided by 2 the quotient is 44. The other no

(a) 32

b) 33

c) 66

d) 7264

a

6) The largest no. which divides 77 , 147, 252 to leave same remainder in each case is.

(a) 9

b)15

c) 25

d) 35

d

7) The least multiple of 7, which leaves a remainder of 4 when divided by 6 , 9 , 15 & 18 is

a) 74

b) 94

c) 184

d) 364

e)None

d

8) The least no. of four digits which is exactly divisible by 2 , 3 , 4 , 5 , 6 , 7 is

a)1261

b) 1260

c) 361

d) None

b

9) The GCM of two nos. is 12 and their difference is also 12. The numbers are

a) 66,78

b) 70,82

c) 94,100

d) 84,96

d

10) Find the least no. which is exactly divisible by 4 , 5 , 6 , 15 , 18?

a) 900

b) 180

c) 950

d)None

b