What is the largest possible length of a scale that can be used to measure exactly the lengths 3m, 5m 10 cm,12m 90cm?
a.10 cm
b.20 cm
c.25 cm
d. 30 cm

• HCF of 300, 510, 1290. is 30 so ans d
• 9 years agoHelpfull: Yes(5) No(1)
• hcf of given length is 30
  so answer is d.30cm
• 9 years agoHelpfull: Yes(4) No(0)
• 3m=300cm
  5m and 10 cm=510cm
  12m and 90cm=1290cm
  HCF(300,510,1290)=30
  ANSWER:d(30 cm)
• 8 years agoHelpfull: Yes(2) No(0)
• 10 cm is the possible that exactly divides all the numbers given
• 9 years agoHelpfull: Yes(1) No(6)