Explain why 3 × 5 × 7 + 7 is a composite number.
Question
Explain why 3 × 5 × 7 + 7 is a composite number.
Solution
To determine if 3 × 5 × 7 + 7 is a composite number, we need to break down the expression and analyze its factors.
Step 1: Calculate 3 × 5 × 7 3 × 5 × 7 = 105
Step 2: Add 7 to the result 105 + 7 = 112
Step 3: Analyze the factors of 112 To determine if 112 is a composite number, we need to check if it has factors other than 1 and itself.
The factors of 112 are: 1, 2, 4, 7, 8, 14, 16, 28, 56, and 112.
Since 112 has factors other than 1 and itself, it is a composite number.
Therefore, 3 × 5 × 7 + 7 (which is equal to 112) is a composite number.
Similar Questions
. Explain why 15 × 7+7 is a composite number?
What is 3 multiplied by the first common multiple of 3 and 7?
Do you have to find all the factors of a number to decide whether it is composite? Explain.
What is 5 multiplied by the first common multiple of 4 and 7?
How many three digit numbers are there divisible by 7
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.