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Treasure Hunter

combination lock

While on an archeological dig, Indiana Jones discovers a six digit combination lock.
To find the hidden treasure, he must open the lock.
The first digit is one less than the second digit.
The second digit is one less than the third digit.
The fourth digit is one less than the fifth digit.
The fifth digit is one less than the sixth didit.
The second digit equals the total of the last three digits.
The third digit is the sum of the second and fourth digits.

Question :
What is the secret combination number?

See answer

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