A person forgot his 5 digit pin code, but he remembers some hints.

- 1st digit is square of 2nd digit.
- Sum of 2nd and 3rd digit makes 10.
- 4th digit is 2nd digit+1.
- Sum of 5th and 3rd digit makes 14.
- Sum of all 5 digits = 30

**Can you guess the person’s pin code from above hints ?**

See Answer

Pin code is 93747.

Lets assume second digit is x, then first digit should be x^2 and fourth digit should be x+1.

**How?**Lets assume second digit is x, then first digit should be x^2 and fourth digit should be x+1.

also assume, 3rd digit is y then 5th digit should be 14-y.

So the number will look like this:-

**<x^2><x><y><x+1><14-y>**

As we also know the sum of all digits, we can say

x^2 + 2x +1 +14 = 30 (x+1)^2 = 16 x+1 = 4 x = 3

As sum of 2nd and third digit is 10 => x+y = 10 => y=7

Thus the pin code is 93747.

Facebook Comments

fivebee says

My pin code is used to be 10032

Yuvaraj Sv says

93747

Nuela says

you must have known the first digit!