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Lord Vishnu Shiva

· started a discussion

· 1 Months ago

Solution (Question: 232878.0 )

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Question:
LCM of 0.5, 2.1 and 2.8 is:
Options:
A) 4.2
B) 42
C) 2.1
D) 8.4
Solution:

Ans: (b)

Knowledge Expert

· commented

· 1 Months ago

Dear Student
Ans: (b)
0.5= 5/10=1/2
2.1=21/10
2.8=28/10=14/5

so, LCM of 0.5,2.1 & 2.8
= LCM of 1/2, 21/10 & 14/5
= LCM of 1,21 & 14/HCF of 2,10 & 5
=42/1
=42
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