Find the HCF and LCM of 90 and 144 bt the method of prime factorisation
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2
Hey there!
144 = 2⁴ × 3²
90 = 2 × 3² × 5
LCM (90, 144) = 2⁴ × 3² × 5 = 16 × 9 × 5
= 720
HCF (90, 144) = 2 × 3² = 2 × 9
= 18
Cheers!
144 = 2⁴ × 3²
90 = 2 × 3² × 5
LCM (90, 144) = 2⁴ × 3² × 5 = 16 × 9 × 5
= 720
HCF (90, 144) = 2 × 3² = 2 × 9
= 18
Cheers!
Answered by
1
90
2=45
3=15
3=5
144
2=72
2=36
2=18
2=9
3=3
90=2*3*3*5
144=2*2*2*2*3
hcf=2*3 =6
lcm=2*2*2*2*3*3*5 =720
2=45
3=15
3=5
144
2=72
2=36
2=18
2=9
3=3
90=2*3*3*5
144=2*2*2*2*3
hcf=2*3 =6
lcm=2*2*2*2*3*3*5 =720
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