Find the HCF and LCM of the Hollowing numbers a) 24 and 36 b) 35, 21 and 28 c) 18, 30 and 12
Answers
Answer:
hope it will help you
Step-by-step explanation:
Factor of 12=2×2×3
Factor of 15=3×5
Factor of 21=3×7
HCF (12,15,21)=3
LCM (12,15,21)=2×2×3×5×7=420
Answer:
SOLUTION:
i) 18,48
18=2\times3\times3
48=2\times2\times2\times2\times3
The common factor of 18 and 48 are 2,3. thus, HCF of 18 and 48 is2\times3=6
ii) 30,42
30=2\times3\times5
42=2\times3\times7
The common factor of 30 and 42 are 2 and 3
thus, HCF of 30,42 are 2\times3=6
iii) 18,60
18=2\times3\times3
60=2\times2\times3\times5
The common factor of 18 and 60 are 2,3. thus, HCF of 18 and 60 are 2\times3=6
iv) 27, 63
27=3\times3\times363=3\times3\times7
The common factor for 27 and 63 is 3
thus, HCF of 27 and 63 is 3\times3=9
v) 36,84
36=2\times2\times3\times384=2\times2\times3\times7
The common factor of 36 and 84 is 2\times3
thus, HCF of 36 and 84 is 2\times2\times3=12
vi) 34, 102
34=2\times17102=2\times3\times17
The common factor in 34 and 102 is 2, 17.
thus, HCF for 34 and 102 is 2\times17=34
vi) 70, 105, 175
70=2\times5\times7
105=3\times5\times7
175=5\times5\times7
The common factor in 70, 105 and 175 are 5, 7.
thus, HCF for 70,105 and 175 is 5\times7=35
vii) 91,112,49
91=7\times13112=2\times2\times2\times2\times749=7\times7
The common factors of 91, 112, and 49 are 7.
therefore, HCF of 91, 112 and 49 are 7.
viii) 18, 54,81
18=2\times3\times354=2\times3\times3\times381=3\times3\times3\times3
therefore common factors between 18, 54, 81 is 3X3=9
xi) 12,45,75
therefore, the coomon factor is 3.
HCF of 12,45,75 is 3.
Step-by-step explanation:
mark me as brainlist