1.

A is the 5th prime number and B is the 7th prime number.What is B-A?

Answer»

Answer:

CCSS.Math: 4.OA.B.4. Prime numbers are numbers that have only 2 FACTORS: 1 and themselves. For example, the FIRST 5 prime numbers are 2, 3, 5, 7, and 11. By contrast, numbers with more than 2 factors are call composite numbers.



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