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A group must enter their age at that moment in time (they are all answering at...

A group must enter their age at that moment in time (they are all answering at the same time), and must enter their birth year. It is only considered valid if the numbers agree.

A= sum of all ages from valid entries

B= the sum of all the birth years from valid entries

N= the total number of valid enteries

1) Prove that N divides A+B without a remainder.

2) Since N divides A+B, find the integer (A+B)/N.

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Answer #1

We arange the age o - дес 231 d2)tu t yn Sum o Car

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