If
5+5=0
6+6=2
7+7=4
then
8+8=?

• 5+5=10--0
  6+6=12--2
  7+7=14--4
  8+8=16--6
  so answer is 6
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• 6 .................add the number and the last digit of answer
  
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• 8+8=16
  than unit digit is 6
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• 6
  5+5=10 and therefore taking last digit 0
  equally 6+6=12 taking 2
  7+7=14 taking 4
  so 8+8=16 taking 6
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• 6
  8+8 is 16 and 6 is the last digit.
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• ans is 6...5+5=10(we take the last digit i.e 0),
  6+6=12(we take the last digi i.e 2),so 8+8=6
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• ans is 6...5+5=10(we take the last digit i.e 0),
  6+6=12(we take the last digi i.e 2),so 8+8=6
• 10 years agoHelpfull: Yes(0) No(0)