67. What is the length of the longest tape which can be used to measure exactly 1 m 75 cm, 4 m 50 cm and 6 m 50 cm? (a) 21 cm (b) 23 cm
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Answer:
Step-by-step explanation:
1m 75cm = 175cm
4m 50cm = 450 cm
6m 50 cm = 650 cm
prime factorization of the above
175= 5 × 5 × 7.
450= 2 × 3 × 3 × 5 × 5
650 = 2 x 5 x 5 x 13
HCF = 5x3x5x5
375
the length of longest rope is 375 cm
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