A man forgot his bank 'ATM PIN' which is a four digit number, but luckily he remembered some hints on how to recall this 'PIN' Here are some of the clues 1) The 1st digit is half of the 2nd 2) The sum of the 2nd and 3rd is 10 3) The 4th is equal to the 2nd plus 1_ _4) The sum of all the digits is 23 What is the ATM PIN ?
Answers
Given : A man forgot his bank 'ATM PIN' which is a four digit number. Some hints are given to find ATM PIN
To find : What is the ATM PIN ?
Solution:
The 1st digit is half of the 2nd
=> 1st digit can be 1 , 2 , 3 , 4 & 2nd digit can be 2 , 4 , 6 , 8
The sum of the 2nd and 3rd is 10
=> 3rd digit can be 8 , 6 , 4 , 2
3) The 4th is equal to the 2nd plus 1
=>4th digit can be 3 , 5 , 7 , 9
Possible combination
1283 => sum = 1 + 2 + 8 + 3 = 14
2465 => Sum = 2 + 4 + 6 + 5 = 17
3647 => Sum = 3 + 6 + 4 + 7 = 20
4829 => Sum = 4 + 8 + 2 + 9 = 23
sum of all the digits is 23
=> ATM PIN = 4829
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