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Math Sequence

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  • 1+2+3+...+10 =
    55
  • 10+11+12+13+17+18+19+20 =
    120
  • 1 x 2 x 3 x 4 x 5 =
    120
  • 11 + 12 + 13 + 14 + 15 =
    65
  • 1+2+3+4+5 =
    15
  • 1+2+3 =
    6
  • 10+20+30 = 
    60
  • 10 + 20 + 30 + ... + 100 =
    550
  • 3+5+7+9 = 
    24
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