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Add hours on a 24-hour clock
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Add hours on a 24-hour clock
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Add in parts
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Add in parts
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Binary card values
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Binary card values
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PythonBeginner robot
Cards from the biggest down
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Cards from the biggest down
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Count the even numbers
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PythonBeginner robot
Does it divide?
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Does it divide?
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Double it
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Greet someone
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Greet someone
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PythonBeginner robot
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How many cards do I need?
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Say hello
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Say hello
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Spot a parity error in a row
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Spot a parity error in a row
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Add a parity bit
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PythonIntermediate alien
Add hours on a 12-hour clock
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Add hours on a 12-hour clock
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PythonIntermediate alien
Barcode: the last digit
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PythonIntermediate alien
Book code: the last digit
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Book code: the last digit
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PythonIntermediate alien
Count the dots on the cards
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Count the dots on the cards
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JavaScriptIntermediate alien
Count the vowels
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PythonIntermediate alien
Count the words
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Factorial
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Fizz and Buzz
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Is it a prime?
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Is it a prime?
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Leap years
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Leap years
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Months later
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Months later
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PythonIntermediate alien
Name the music note
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Name the music note
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PythonIntermediate alien
Palindromes
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Prime factors
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Prime factors
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PythonIntermediate alien
Reverse the words
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PythonIntermediate alien
Show a number with five cards
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Show a number with five cards
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Sort a list by hand
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Turn text around
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PythonAdvanced astronaut
Add two video lengths
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Add two video lengths
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Binary search
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PythonAdvanced astronaut
Card number: the last digit
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Card number: the last digit
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PythonAdvanced astronaut
Check any barcode
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JavaScriptAdvanced astronaut
Check any barcode
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Fibonacci, fast
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PythonAdvanced astronaut
Find the flipped card
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JavaScriptAdvanced astronaut
Find the flipped card
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PythonAdvanced astronaut
Find the prime numbers
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Flatten a list
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PythonAdvanced astronaut
Is this book code real?
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Is this card number possible?
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Is this card number possible?
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Write a number in binary
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