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Chapter 1
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HCF and LCM by prime factorisation
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Quiz
Class X
Quick check : HCF and LCM
6 questions
Question 1 of 6
Score:
0
/ 0
LCM of
12
,
15
,
21
12, 15, 21
12
,
15
,
21
is:
A
210
210
210
B
420
420
420
C
840
840
840
D
105
105
105
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