SOLUTION: Sue & Bob need to call Joel to tell him about the class trip. They know the first part of his number 212 but have forgotten the rest. Sue remembered that it ends in 4 and Bob says

SOLUTION: Sue & Bob need to call Joel to tell him about the class trip. They know the first part of his number 212 but have forgotten the rest. Sue remembered that it ends in 4 and Bob says

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Question 178571: Sue & Bob need to call Joel to tell him about the class trip. They know the first part of his number 212 but have forgotten the rest. Sue remembered that it ends in 4 and Bob says," All the other digits are odd." How many numbers will they have to call before they get the right number?
212 - __ __ __ 4 ?
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
5!/(5-3)!=5*4*3=60
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