Student: partha

Q. ( )+( )+( )=30.......Fill the boxies using (1,3,5,7,9,11,13,15) you can also repeted the number


Answer :

Partha,  Thanks for posting question on www.maths-hub.com

Your Question is : ( )+( )+( )=30.......  Fill the boxes using (1,3,5,7,9,11,13,15)  number can be repeated.

Topic : Aptitude

Method : 

  • Constraint 1 : Given numbers are (1,3,5,7,9,11,13,15)  Only these to be used, though they can be repeated.
  • Constraint 2 : Sum shall be = 30
  • Constraint 3 : Only 3 Placeholders for operations

Solution:  There can be multiple solutions if we just limit to above constraints and be flexible. Few of these are :

  • (1+3) + (7+3) + (13+3) = 30      [Using multiple additions]
  • (11–1) + (13–3) + (15–5) = 30   [Using multiple subtractions]
  • (9-3) + (15-1) + (15-5) = 30   [Using multiple subtractions]
  • 11.3 + 15.7 + 3 = 30   [Using decimals]

There can be many more solutions.

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