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Secondary 1 | Maths
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Pls help
Date Posted: 5 days ago
Views: 86
(a)
15 = 3 × 5
105 = 3 × 5 × 7
525 = 3 × 5 × 5 × 7
LCM(15 , x , 105)=525
x=3 × 5 × 5 = 75
OR
x=5 × 5 = 25
(b)
HCF(A,B)
= 60 = 2² × 3 × 5
A+B
= 480 = 2³× 2² × 3 × 5
= 2² × 3 × 5 × (1+7)
= 2² × 3 × 5 × (3+5)
Ans :
( 60 , 420)
(180 , 300)
15 = 3 × 5
105 = 3 × 5 × 7
525 = 3 × 5 × 5 × 7
LCM(15 , x , 105)=525
x=3 × 5 × 5 = 75
OR
x=5 × 5 = 25
(b)
HCF(A,B)
= 60 = 2² × 3 × 5
A+B
= 480 = 2³× 2² × 3 × 5
= 2² × 3 × 5 × (1+7)
= 2² × 3 × 5 × (3+5)
Ans :
( 60 , 420)
(180 , 300)
See 1 Answer
Thank you for the help
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