Highest common factor

12 questions

1. A ___ number is the product of two repeated integers.
2. Write 2^3\times3\times5^2 as an integer.
3. True or false? 2^5\times3^3\times5 is an even integer
4. True or false? 2\times3\times5^2 is a multiple of 10
5. Which of the following is a multiple of 6?
6. Which of the following is a square number?
7. The C in HCF stands for ___
8. 7^5 is a factor of an integer. Which of the following are also factors of the same integer?
9. Which of the following is a factor of 2^4\times3^2\times5^2 and of 2^3\times3^4\times5?
10. The HCF of 120 and 630 is ___
11. The HCF of 42, 60 and 90 is ___
12. The HCF of 36, 54 and 270 is 18. The missing prime factor in the Venn diagram is ___

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