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Question

The sum of three numbers is 19 and the sum of first two numbers and last two numbers is 10 and 13 respectively. The value of middle number is.


  1. 1

  2. 2

  3. 3

  4. 4

  5. 8


Solution

The correct option is D

4


Let the three numbers be a,b and c

a + b + c = 19

a + b = 10

b + c = 13

a + 2b + c = 23

b = 4

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