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Question

In the following expression, prime factorisation has been done?
$$70=2\times 5\times 7$$.

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Solution

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$$70=2\times 5\times 7$$
Since all the factors are prime, prime factorisation has been done.

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Similar Questions

Q1

In which of the following expressions, prime factorisation has been done?

(1) 24 = 2 × 3 × 4 (3) 70 = 2 × 5 × 7

(2) 56 = 7 × 2 × 2 × 2 (4) 54 = 2 × 3 × 9

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Q2

In which of the following expressions, prime factorisation has been done?

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Q3

In which of the following expressions, prime factorization has been done:
(a) 24 =

2 \times 3 \times 4

(b) 56 =

7 \times 2 \times 2 \times 2

(c) 70 =

2 \times 5 \times 7

(d) 54 =

2 \times 3 \times 9

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Q4

In which of the following expressions, prime factorization has been done?

(a) 24 = 2 × 3 × 4 (b) 56 = 7 × 2 × 2 × 2

(c) 70 = 2 × 5 × 7 (d) 54 = 2 × 3 × 9

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Q5

Question 9

In which of the following expressions, prime factorization has been done:
24 = $2 \times 3 \times 4$
56 = $7 \times 2 \times 2 \times 2$
70 = $2 \times 5 \times 7$
54 = $2 \times 3 \times 9$

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