What's the combination for the safe?
$begingroup$
The CFO sat back in his leather chair, which creaked and squeaked. "It's actually pleather," he said to the intern sitting nervously opposite him, a notepad resting on his knees. "We're very cost-conscious here. The intern, who'd already discovered that the building's only toilet operated on the time-tested 'take-a-number-and-wait-to-be-called' system, nodded carefully.
"All reports are to be stored in that safe," said the CFO, pointing to a squat grey box. "We change the $7$-digit combination every month, and no combination may be re-used. We like to think the combinations are efficient. You get one chance to enter the code, or the safe locks you out for 24 hours. Old combinations are written on this post-it note so that no mistakes are made."
The CFO's cell-phone rang at that moment, and the intern politely stared at his shoes trying not to listen. When the CFO hung up he stood up. "I have to go and... fix things," he said. "While I'm gone get started on reading the reports in the safe. I shall be back expeditiously."
The intern looked at the safe, slowly realising that the CFO hadn't told him what the current combination was. After looking at the post-it note for a few minutes though, he entered the combination in the safe and was busy squinting at reports written in 6-pt font (to save space) by the time the CFO returned.
The combinations written on the post-it note are:
$$5124637$$
$$7125364$$
$$4152637$$
$$5162734$$
$$6243517$$
What combination did the intern enter into the safe, and how did he know it would work?
mathematics logical-deduction
asked 11 hours ago
postmortespostmortes
452211
$endgroup$
add a comment |
$begingroup$
The CFO sat back in his leather chair, which creaked and squeaked. "It's actually pleather," he said to the intern sitting nervously opposite him, a notepad resting on his knees. "We're very cost-conscious here. The intern, who'd already discovered that the building's only toilet operated on the time-tested 'take-a-number-and-wait-to-be-called' system, nodded carefully.
"All reports are to be stored in that safe," said the CFO, pointing to a squat grey box. "We change the $7$-digit combination every month, and no combination may be re-used. We like to think the combinations are efficient. You get one chance to enter the code, or the safe locks you out for 24 hours. Old combinations are written on this post-it note so that no mistakes are made."
The CFO's cell-phone rang at that moment, and the intern politely stared at his shoes trying not to listen. When the CFO hung up he stood up. "I have to go and... fix things," he said. "While I'm gone get started on reading the reports in the safe. I shall be back expeditiously."
The intern looked at the safe, slowly realising that the CFO hadn't told him what the current combination was. After looking at the post-it note for a few minutes though, he entered the combination in the safe and was busy squinting at reports written in 6-pt font (to save space) by the time the CFO returned.
The combinations written on the post-it note are:
$$5124637$$
$$7125364$$
$$4152637$$
$$5162734$$
$$6243517$$
What combination did the intern enter into the safe, and how did he know it would work?
mathematics logical-deduction
asked 11 hours ago
postmortespostmortes
452211
$endgroup$
3
$begingroup$
There's always a relevant XKCD, but sometimes there's also a relevant Dilbert.
$endgroup$
– Brandon_J
4 hours ago
add a comment |
$begingroup$
The CFO sat back in his leather chair, which creaked and squeaked. "It's actually pleather," he said to the intern sitting nervously opposite him, a notepad resting on his knees. "We're very cost-conscious here. The intern, who'd already discovered that the building's only toilet operated on the time-tested 'take-a-number-and-wait-to-be-called' system, nodded carefully.
"All reports are to be stored in that safe," said the CFO, pointing to a squat grey box. "We change the $7$-digit combination every month, and no combination may be re-used. We like to think the combinations are efficient. You get one chance to enter the code, or the safe locks you out for 24 hours. Old combinations are written on this post-it note so that no mistakes are made."
The CFO's cell-phone rang at that moment, and the intern politely stared at his shoes trying not to listen. When the CFO hung up he stood up. "I have to go and... fix things," he said. "While I'm gone get started on reading the reports in the safe. I shall be back expeditiously."
The intern looked at the safe, slowly realising that the CFO hadn't told him what the current combination was. After looking at the post-it note for a few minutes though, he entered the combination in the safe and was busy squinting at reports written in 6-pt font (to save space) by the time the CFO returned.
The combinations written on the post-it note are:
$$5124637$$
$$7125364$$
$$4152637$$
$$5162734$$
$$6243517$$
What combination did the intern enter into the safe, and how did he know it would work?
mathematics logical-deduction
asked 11 hours ago
postmortespostmortes
452211
$endgroup$
The CFO sat back in his leather chair, which creaked and squeaked. "It's actually pleather," he said to the intern sitting nervously opposite him, a notepad resting on his knees. "We're very cost-conscious here. The intern, who'd already discovered that the building's only toilet operated on the time-tested 'take-a-number-and-wait-to-be-called' system, nodded carefully.
"All reports are to be stored in that safe," said the CFO, pointing to a squat grey box. "We change the $7$-digit combination every month, and no combination may be re-used. We like to think the combinations are efficient. You get one chance to enter the code, or the safe locks you out for 24 hours. Old combinations are written on this post-it note so that no mistakes are made."
The CFO's cell-phone rang at that moment, and the intern politely stared at his shoes trying not to listen. When the CFO hung up he stood up. "I have to go and... fix things," he said. "While I'm gone get started on reading the reports in the safe. I shall be back expeditiously."
The intern looked at the safe, slowly realising that the CFO hadn't told him what the current combination was. After looking at the post-it note for a few minutes though, he entered the combination in the safe and was busy squinting at reports written in 6-pt font (to save space) by the time the CFO returned.
The combinations written on the post-it note are:
$$5124637$$
$$7125364$$
$$4152637$$
$$5162734$$
$$6243517$$
What combination did the intern enter into the safe, and how did he know it would work?
mathematics logical-deduction
mathematics logical-deduction
asked 11 hours ago
postmortespostmortes
452211
asked 11 hours ago
postmortespostmortes
452211
asked 11 hours ago
postmortespostmortes
452211
asked 11 hours ago
postmortespostmortes
452211
asked 11 hours ago
postmortespostmortes
452211
452211
3
$begingroup$
There's always a relevant XKCD, but sometimes there's also a relevant Dilbert.
$endgroup$
– Brandon_J
4 hours ago
add a comment |
3
$begingroup$
There's always a relevant XKCD, but sometimes there's also a relevant Dilbert.
$endgroup$
– Brandon_J
4 hours ago
3
3
$begingroup$
There's always a relevant XKCD, but sometimes there's also a relevant Dilbert.
$endgroup$
– Brandon_J
4 hours ago
$begingroup$
There's always a relevant XKCD, but sometimes there's also a relevant Dilbert.
$endgroup$
– Brandon_J
4 hours ago
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
return StackExchange.using("mathjaxEditing", function () {
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
});
});
}, "mathjax-editing");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "559"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fpuzzling.stackexchange.com%2fquestions%2f80585%2fwhats-the-combination-for-the-safe%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Puzzling Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fpuzzling.stackexchange.com%2fquestions%2f80585%2fwhats-the-combination-for-the-safe%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
3
$begingroup$
There's always a relevant XKCD, but sometimes there's also a relevant Dilbert.
$endgroup$
– Brandon_J
4 hours ago