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# A bank issued credit card numbers and the corresponding PIN

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Intern
Joined: 29 Aug 2017
Posts: 3
A bank issued credit card numbers and the corresponding PIN  [#permalink]

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29 Aug 2017, 11:06
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (00:21) wrong based on 3 sessions

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A bank issued credit card numbers and the corresponding PIN (Personal Identification Number). Both are 3-digit numbers up to 996. Pinaki was the last to get the credit card and so he had the last possible credit card number. He was afraid of forgetting his PIN. He wrote down the number 123 in his diary to remember his PIN. He also wrote out the way to calculate 123 : "Multiply the card number by PIN. Divide the product by 997. The remainder is 123". Once, Prafull saw his diary in which Pinaki wrote this number 123. Prafull did a lot of purchasing, as he now knows Pinaki's PIN. What is Pinaki's PIN?

A.874
B.875
C.876
D.877

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Math Expert
Joined: 02 Sep 2009
Posts: 55271
Re: A bank issued credit card numbers and the corresponding PIN  [#permalink]

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01 Sep 2017, 08:00
being wrote:
A bank issued credit card numbers and the corresponding PIN (Personal Identification Number). Both are 3-digit numbers up to 996. Pinaki was the last to get the credit card and so he had the last possible credit card number. He was afraid of forgetting his PIN. He wrote down the number 123 in his diary to remember his PIN. He also wrote out the way to calculate 123 : "Multiply the card number by PIN. Divide the product by 997. The remainder is 123". Once, Prafull saw his diary in which Pinaki wrote this number 123. Prafull did a lot of purchasing, as he now knows Pinaki's PIN. What is Pinaki's PIN?

A.874
B.875
C.876
D.877

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________
Re: A bank issued credit card numbers and the corresponding PIN   [#permalink] 01 Sep 2017, 08:00
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