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Which two periods have the same number of elements ​

User JB King
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2 Answers

6 votes

Answer:

Periods 2 and 3 have the same number of elements.

Step-by-step explanation:

I think periods 4 and 5 also have the same number of elements.

User Murta
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1 vote

Answer:

4 & 5 have the same number of elements

User Luuk Schoenmakers
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