exercise Makes Perfect

Identify Prime and Composite Numbers

Some numbers, prefer (72), have plenty of factors. Other numbers, such as (7), have only 2 factors: (1) and also the number. A number with just two determinants is dubbed a prime number. A number with much more than two components is called a composite number. The number (1) is no prime no one composite. It has only one factor, itself.

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Definition: prime Numbers and also Composite Numbers

A element number is a counting number better than (1) who only factors are (1) and also itself.

A composite number is a counting number that is not prime.

Figure (PageIndex5) perform the counting numbers from (2) v (20) along with their factors. The emphasize numbers room prime, since each has actually only two factors.

What Does Maybe Mean From A Guy Says Maybe To Hanging Out? What Does A Guy Mean When He Says Maybe

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0 100 100
1 100 + 15 115
2 100 + 15 • 2 130
3 100 + 15 • 3
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Banking In March, Gina opened up a Christmas club savings account at her bank. She deposit \$75 to open up the account. Every week, she added \$20 come the account. The table shows exactly how much money Gina had put in the account through the end of each week. Finish the table by filling in the blanks. mainly after opened the account Total variety of dollars Gina put in the account Simplified complete
0 75 75
1 75 + 20 95
2 75 + 20 • 2 115
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Writing Exercises

If a number is divisible by 2 and also by 3, why is it additionally divisible by 6? What is the difference in between prime numbers and also composite numbers?