Question: Write the prime factorisation of 10. Use exponents when appropriate and order the factors from least to greatest (for example, 2²*3*5)
(A) 2*5
(B) 3*5
(C) 2*4
(D) 3*2
Solution
A prime factorisation shows how to write a number as the product of prime factors.
Divide by prime factors until the quotient is 1.
10÷2 = 5
5÷5 = 1
The prime factorisation of 10 is:
2*5
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