Question

Express as prime factors : a)3825 b)5005

Answer 1

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a✨Prime factors of 3825 = 3, 3, 5, 5, 17
Which is the same as = 3²× 5²× 17

b✨Prime factors of 5005 = 5 × 7 × 11 × 13

Answer 2

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(i) 140

140=2×70

=2×2×35

=2×2×5×7

=2×2×5×7×1

(ii) 156

156=2×78

=2×2×39

=2×2×3×13

=2×2×3×13×1

(iii) 3825

3825=3×1275

=3×3×425

=3×3×5×85

=3×3×5×5×17

=3×3×5×5×17×1

(iv) 5005

5005=5×1001

=5×7×143

=5×7×11×13

=5×7×11×13×1

(v) 7429

7429=17×437

=17×19×23

=17×19×23×1