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Question
Give prime factorisation of 4620.
Numerical
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Solution
Given: 4620.
4620 ÷ 2 = 2310
2310 ÷ 2 = 1155 ...(So two factors of 2)
1155 ÷ 3 = 385 ...(One factor of 3)
385 ÷ 5 = 77 ...(One factor of 5)
77 ÷ 7 = 11 ...(One factor of 7)
11 ÷ 11 = 1 ...(One factor of 11)
4620 = 2 × 2 × 3 × 5 × 7 × 11
= 22 × 3 × 5 × 7 × 11
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