EXERCISE MARK AGAINST THE CORRECT ANSWER IN EACH OF THE FOLLOWING. IN 51 TO 60:

EXERCISE

MARK AGAINST THE CORRECT ANSWER IN EACH OF THE FOLLOWING.   IN 51 TO 60:      

                   51. 753 X 753 + 247 X 247 – 753 X 247          =?

                        753 X 753 X 753 + 247 X 247 X 247

a) 1/1000

b)1/506

c) 253/500

d)None of these

52.   If the number 517* 324* is completely divisible by 3, then the smallest whole number in place of *will be:

a) 0

b)1

c) 2

d)None of these

53.   If the number 418* 673 is completely divisible by 9, then the smallest whole number in place of *will be:

a)  2

b)5

c) 6

d)7

e)None of these

54.   If the number 97215 * 6 is completely divisible by 11, then the smallest whole number in  place of *will be:

a) 3

b)2

c) 1

d)5

e)None of these

55.   If the number 91876 * 6 is completely divisible by 8, then the smallest whole number in place of * will be:

a)      1

b)      2

c)       3

d)      4

e)      None of these

56.   Which one of the following numbers is completely divisible by 45?

a)      181560

b)      331145

c)       202860

d)      2033550

e)      None of these

57.   Which one of the following numbers is completely divisible by 99?

a)      3572404

b)      135792

c)       913464

d)      114345

e)      None of these

58.   If the number 42573* is exactly divisible by 72, then the minimum value of * is:

a)      4

b)      5

c)       6

d)      7

e)      8

59.   If X and y are the two digits of the number 653 X y such that this number is divisible by 80, then X + y =?

a)       2

b)      3

c)       4

d)      6

e)      None of these.

60.   If the product 4864 x 9 P 2 is divisible by 12, the value of P is;

a)      2

b)      5

c)       6

d)      8

e)      None of these.

                       ANSWERS:

51.   (A)
52.(C)
 53.(D) 
54.(A) 
55.(C) 
56.(C) 
57.(D) 
58.(C) 
59.(A) 
60.(E).