//Tech number 2025 = 20 +25 =45 * 45 =2025

//printing all 4 digit Tech numbers

class tech

{

public static void main(String arg[])

{

for(int i=1000;i<=9999;i++)

{

int cpy,fst,lst;

cpy=i;

lst=cpy%100;

fst=cpy/100;

int sq=(int)Math.pow((fst+lst),2);

if(sq==cpy)

System.out.print(i+"\t");

}

}

}

/*

Output:

2025    3025    9801    

Press any key to continue . . .

/*

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