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`        The digits of a three digit number forms a Gp. If we subtract 400 From it, then we get another 3  Digit Number whose digits Forms an Arithmetic series. What is The Sum Of These two Numbers? `
8 months ago

Arun
22557 Points
```							 Dear student Let the digits are x , y and z hence number is 100z + 10 y + x y^2 = xz Hence xz must be a square number xz = 9 hence y = 3 now some hit and trial,x = 1 , z= 9 hence number is 931  subtract 400,931 –  400 = 531 hence 931 + 531 = 1462
```
8 months ago
Arun
22557 Points
```							 Let the digits are x , y and z hence number is 100z + 10 y + x y^2 = xz Hence xz must be a square number xz = 9 hence y = 3 now some hit and trial,x = 1 , z= 9 hence number is 931  subtract 400,931 –  400 = 531 hence 931 + 531 = 1462 Hope it helps RegardsArun (askIITians forum expert)
```
8 months ago
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