Question

(111) 336 and 54
3. Find the LCM and HCF of the following integers by applying the prime factorisation
method.
i) 12,15 and 21
(ii) 17, 23 and 29
(iii) 8,9 and 25
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Answer 1

$1) \;\sf\small{ 12,15,21=2×2×3×5×7=420 }$ $2)\;\sf\small{17,23,29=1×17×23×29=11,339 }$

$3)\;\sf\small{8,9,25=2×2×2×3×3×5×5=1,800}$

Answer 2

$\huge\color{blue}{\mid{\fbox{\tt{αηsωεя}}\mid}}$

1)12,15,21=2×2×3×5×7=420 2

2)17,23,29=1×17×23×29=11,339

3)8,9,25=2×2×2×3×3×5×5=1,800