Question

3.Find the LCM using prime factorization method.


C 105, 175, 140
g 92, 128
d 28, 15, 42
h 62,94
a 72, 90
b 16, 30, 42
e 105, 135
f 82, 102


4.Find the LCM of the following numbers by common division method.
a 40, 80, 120, 160
b 30, 48, 120
C 72, 108, 144
e 39, 65, 78
f 51, 102, 34
g 70, 140, 350
d 84, 144, 96
h 63, 147, 84


Please help me in answering this Question..​

Answer 1

Answer:

Q3

C. 5 105 _ 5 175 _ 5 140

3 21 _ 5 35 _ 7 28

7 7 _ 7 7 _ 3 3

1 _ 1 _ 1

105=5×3×7

175=5×5×7

140=5×7×3

5 and 7 are common in all

3,5 and 3 are non common

So, L. C. M=common factors ×Non common factor

=(5×7) ×(3×5×3)

=35×45

=1575

Step-by-step explanation:

Others are also same.I can't write all questions bcz I have short time

Hope so this helps u in Q3

Answer 2

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