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A factor is a number that divides another number exactly without leaving a remainder. Every number has at least two factors 1 and itself. Factors help in multiplication and division. They are useful in finding common factors highest common factor (HCF) and solving mathematical problems related to divisibility and number properties.
In this chapter students learn about prime and composite numbers. It covers the concept of factors multiples and prime factorization. Understanding prime numbers helps in solving problems related to divisibility and HCF. The chapter improves logical thinking and helps students recognize number patterns and their applications in real-life situations.
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The correct answer is 9. To check, we find the factors of 56.
56 ÷ 2 = 28
56 ÷ 7 = 8
56 ÷ 8 = 7
However, 56 ÷ 9 does not give a whole number.
Thus, 9 is not a factor of 56.
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