Question

1 Express each number as a product of its prime
factors
(i) 140
(ii) 156
(iii) 3825
(iv) 5005
(v) 7429​

Answer 1

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Step-by-step explanation:

Solution : i) 140 Take LCM of 140 i.e 2×2×5×7×1 Hence, 140=2×2×5×7×1

ii) 156 Take LCM of 156 i.e 2×2×13×3×1 Hence, 156=2×2×13×3×1

iii)3825 Take LCM of 3825 i.e 3×3×5×5×17×1 Hence, 3825=3×3×5×5×17×1

iv)5005 Take LCM of 5005 i.e 5×7×11×13×1 Hence, 5005=5×7×11×13×1

v)7429 Take LCM of 7429 i.e 17×19×23×1 Hence, 7429=17×19×23×1

Answer 2

Answer:

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Step-by-step explanation:

(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