how to know when to apply hcf or lcm in word problem - Wikitechy https://www.wikitechy.com/interview-questions/tag/how-to-know-when-to-apply-hcf-or-lcm-in-word-problem/ Interview Questions Mon, 06 Sep 2021 12:02:15 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png how to know when to apply hcf or lcm in word problem - Wikitechy https://www.wikitechy.com/interview-questions/tag/how-to-know-when-to-apply-hcf-or-lcm-in-word-problem/ 32 32 Which greatest possible length can be used to measure exactly 15 meter 75 cm, 11 meter 25 cm and 7 meter 65 cm ? https://www.wikitechy.com/interview-questions/lcm-and-hcf/which-greatest-possible-length-can-be-used-to-measure-exactly-15-meter-75-cm-11-meter-25-cm-and-7-meter-65-cm/ https://www.wikitechy.com/interview-questions/lcm-and-hcf/which-greatest-possible-length-can-be-used-to-measure-exactly-15-meter-75-cm-11-meter-25-cm-and-7-meter-65-cm/#respond Tue, 17 Aug 2021 17:46:33 +0000 https://www.wikitechy.com/interview-questions/?p=1841

Which greatest possible length can be used to measure exactly 15 meter 75 cm, 11 meter 25 cm & 7 meter 65 cm ?

A. 45

B. 255

C. 55

D. 36

Answer : A. 45

Explanation:

The HCF for given length.
–> 15 meter 75 cm = 1575 cm.
–> 11 meter 25 cm = 1125 cm
–> 7 meter 65 cm = 765 cm.

1575 = 5 * 5 * 3 * 3 * 7
1125 = 5 * 5 * 5 * 3 * 3
765 = 5 * 3 * 3 * 17

HCF of 1575 , 1125 and 765 is 45.

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