Number system Questions pg3

Number System Questions Pg4

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  1. The sum of three consecutive odd natural numbers is 147. Then, the middle number is
  1. 48
  2. 51
  3. 49
  4. 47

Answer is c

 

2. The sum of all natural numbers between 100 and 200. Which are multiples of 3 is

  1.  4900
  2. 4950
  3. 4980
  4. 5000

Answer is b

 

3. The sum of the squares of three consecutive natural numbers is 2030. Then, what is the middle number?

  1. 26
  2. 28
  3. 27
  4. 25

Answer is a

 

4. The sum of all the 3-digit numbers, each of which on division by 5 leaves remainder 3, is

  1. 1550
  2. 99090
  3. 6995
  4. 180

Answer is b

 

5. The sum of three consecutive natural numbers divisible by3 is 45. The smallest number is

  1.  3
  2. 9
  3. 12
  4. 18

Answer is c

 
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