Find the LCM of the following numbers:
(a) 9 and 4
(b) 12 and 5
(c) 6 and 5
(d) 15 and 4

AcademicMathematicsNCERTClass 6

To do :

We have to find the LCM of the given pairs of numbers.

Solution :

(a) LCM of 9 and 4 is,

$9=3\times 3$

$4=2\times 2$

LCM of 9 and 4 $=  2\times 2\times 3\times 3$

$= 36$

Therefore, the LCM of 9 and 4 is 36.

(b) LCM of 12 and 5 is,

$12=2\times 2\times3$

$5=1\times 5$

LCM of 12 and 5 $=  2\times 2\times 3\times 5$

$= 60$

Therefore, the LCM of 12 and 5 is 60.

(c) LCM of 6 and 5 is,

$6=2\times3$

$5=1\times 5$

LCM of 6 and 5 $=  2\times3\times 5$

$= 30$

Therefore, the LCM of 6 and 5 is 30.

(d) LCM of 15 and 4 is,

$15=3\times5$

$4=2\times 2$

LCM of 15 and 4 $=  3\times5\times 2\times2$

$= 60$

Therefore, the LCM of 15 and 4 is 60.

raja
Updated on 10-Oct-2022 13:30:51

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