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Posted by on Monday, March 15, 2010 at 8:46pm.

a triangle b means (10*a) + b. for an example,5 triangles 4= (10*5)=50+4 =54.find the value of8 triangle 1.

  • math - , Monday, March 15, 2010 at 9:04pm

    (10 * 8) + 1 =
    80 + 1
    = 81
    After your examples I am sure you could have figured this one out

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