Daffodil International University

Educational => Mathematics => Interesting Maths => Topic started by: Masuma Parvin on November 13, 2012, 04:12:20 PM

Title: Algebra Puzzle
Post by: Masuma Parvin on November 13, 2012, 04:12:20 PM

Solve the following:

ABCD × D = DCBA

The Solution . . .
1089 × 9=9801

Title: Re: Algebra Puzzle
Post by: msu_math on November 13, 2012, 04:47:50 PM

Very interesting !! But I think this solution is not so obvious because the relation "ABCD x D = DCBA" leads an equation of the form "(1000A + 100B + 10C + D) x D = 1000D + 100C + 10B + A"