Find the H.C.F of 3.68 & 5.35
2025
Find the H.C.F of 3.68 & 5.35
- A.
0.01
- B.
0.02
- C.
0.03
- D.
0.04
Attempted by 32 students.
Show answer & explanation
Correct answer: A
To find the Highest Common Factor (H.C.F.) of decimal numbers like 3.68 and 5.35, the most reliable method is to convert them into fractions in their simplest form.
Step-by-Step Calculation
1. Convert decimals to fractions:
3.68 = 368 / 100. Simplifying by dividing both by 4 gives 92 / 25.
5.35 = 535 / 100. Simplifying by dividing both by 5 gives 107 / 20.
2. Apply the H.C.F. formula for fractions:
The H.C.F. of fractions is found using:
H.C.F. = (H.C.F. of numerators) / (L.C.M. of denominators)
H.C.F. of numerators (92 and 107):
92 = 2 * 2 * 23
107 is a prime number.
Their only common factor is 1. So, the H.C.F. is 1.
L.C.M. of denominators (25 and 20):
25 = 5 * 5
20 = 2 * 2 * 5
L.C.M. = 2 * 2 * 5 * 5 = 100.
3. Calculate the final H.C.F.:
H.C.F. = 1 / 100 = 0.01.