A professor thinks of two numbers

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?




Similar Logic Riddles

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

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If,

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3 / 9 = 7
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Then

4 / 5 = ?

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A very interesting trivia question for all.

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If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
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Will you accept that bet?

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In which direction should the missing arrow point?

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(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

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A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

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There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.