Question

PAGE NO.
MATHS
Date :
1
120
find the LCM of the
of the following
obs
pairs using
the prieme
be
factorisation method.
24,33 -
GE
POST​

Answer 1

Answer:

84=2

2

×3×7,90=2×3

2

×5 and 120=2

3

×3×5

Prime factors Least exponent

2 1

3 1

5 0

7 0

∴HCF=2

1

×3

1

=6

Common prime factors Greatest exponent

2 3

3 2

5 1

7 1

∴LCM=2

3

×3

2

×5

1

×7

1

=8×9×5×7

=2520.