NUMBER SYSTEM

NUMBER SYSTEM

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In post 'NUMBER SYSTEM 'we discuss about  number system. There are some question regarding NUMBER SYSTEM . 

Table of Contain:-

# Find the unit digit in the product of (268 x 539 x 826 x 102)? 

# Find the last two-digits of 15x37x63x51x97x17 ?

  1 . Find the unit digit in the product of (268 x 539 x 826 x 102). 

    (a) 5

    (b) 3 

    (c) 4 

    (d) 2

    (e) None of the above 

Answer:- (c) 4 

2. Find the unit digit in the product of (4326 x 5321). 

   (a) 6

   (b) 8 

   (c) 1

   (d) 3 

   (e) None of the above 

Answer:- (a) 6

3. What is the unit digit in (6817)754 ? 

 (a) 8

 (b) 4

 (c) 2

 (d) 9 

 (e) None of the above 

Answer :- (d) 9

4. What is the unit digit in (365 x659x771)?

   (a) 6 

   (b) 4 

   (C) 2

   (d) 1 

   (e) None of the above

Answer:- (b) 4

5. Find the last two-digits of 15x37x63x51x97x17 ? 

   (a) 35 

   (b) 45

   (c) 55

   (d) 85

Answer :- (a) 35

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6. How many rational numbers are there between 1 and 1000? [CDS 2012]

  (a) 998

  (b) 999

  (c) 1000 

 (d) Infinite 

Answer :- (c) 1000

7. The sum of 5 consecutive even numbers A,B,C,D and E is 130. 

What is the product of A and E ? 

  (a) 720 

  (b) 616

  (c) 660 

  (d) 672 

  (e) None of the above 

Answer :- (c) 660

8. The sum of the five consecutive numbers is equal to 170. What is the product of largest and the smallest numbers? 

  (a) 1512

  (b) 1102

  (c) 1152

  (d) 1210 

  (e) None of the above

Answer :- (c) 1152

9. Which of the following numbers always divides the difference between the squares of two consecutive odd integers? 

  (a) 7 

  (b) 3 

  (c) 8 

  (d) 6 

  (e) None of the above

Answer :- (c) 8

10. A number divided by 56 gives 29 as remainder. If the same number is divided by 8, the remainder will be ... 

  (a) 4

  (b) 5 

  (c) 6 

  (d) 7

Answer :- (b) 5