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Home » Brain Teasers » The Smart Scholar Method
 Puzzle # 11 Easy Method > Deepak's dalliance with digits
Easy does it! The Smart Scholar Method
9! = 9*8*7*6*5*4*3*2 = 9*8*7*(3*2)*5*4*3*21 =
9*(3*3)*8*7*2*5*4*2 = 9*9*8*7*2*5*4*2 =
9*9*8*7*2*5*(4*2) = 9*9*8*7*2*5*(4*2) =
9*9*8*8*7*2*5* = 9*9*8*8*7*5*2.
The number is 998875211 and the sum of its digits is 50.
Or 9! = 9*8*7*6*5*4*3*2 = 3628880 = 9*40320 = 9*9*4480 = 9*9*8*560 = 9*9*8*8*70 = 9*9*8*8*7*10 = 9*9*8*8*7*5*2 = 9*9*8*8*7*5*2.
The number is 998875211 and the sum of its digits is 50.
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