A boy forgot the pin of his phone which is 4 digit no. and sudenly he remembered some clues.
This are the clues:
The first number is the square of the second number and the third number plus the second is ten
the fourth is equal to the second number plus one the sum of the 4 digit number is 23



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Answers

2014-10-05T16:03:54+08:00
1st =square of 2nd
2nd=x
3rd=10-2nd
4th=2nd + 1 
1st+2nd+3rd+4th=23
9+3+7+4=23
x=3

1st number = 3^2
                 = 9
2nd number= 3
3rd number= 10-3
                = 7
4th number= 3+1
                =4
9+3+7+4=23
23=23
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