Find the highest length which can be used to measure exactly the lengths 48 m, 72 m, 96 m and 120 m.

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UP Police SI (दरोगा) Official PYP (Held On: 12 Nov 2021 Shift 3)
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  1. 26
  2. 25
  3. 24
  4. 27

Answer (Detailed Solution Below)

Option 3 : 24
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यूपी पुलिस SI (दरोगा) सामान्य हिंदी मॉक टेस्ट
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Detailed Solution

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Given:

Lengths to measure = 48 m, 72 m, 96 m, and 120 m

Formula Used:

To find the highest length that can measure these lengths exactly, we calculate their Highest Common Factor (HCF).

Calculation:

Find the HCF of 48, 72, 96, and 120:

Prime factorization:

48 = 24 × 3

72 = 23 × 32

96 = 25 × 3

120 = 23 × 3 × 5

Common prime factors: 2 and 3

Lowest powers of common factors:

23

3

HCF = 23 × 3

⇒ HCF = 8 × 3

⇒ HCF = 24

The highest length that can measure 48 m, 72 m, 96 m, and 120 m exactly is 24 m.

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