Question : What is the HCF of 2.7 and 20.25?
Option 1: 1.45
Option 2: 1.35
Option 3: 16.5
Option 4: 15.5
Answer (1)
19th Jan, 2024
Correct Answer: 1.35
Solution :
Find the Highest Common Factor (HCF) of 270 and 2025 and then divide by 100.
The prime factorization of 270 = 3
3
× 2 × 5
The prime factorization of 2025 = 5
2
× 3
4
⇒ HCF of 27 and 2025 = 3
2
= 5 x 27 = 135
⇒ HCF of 2.7 and 20.25 = 1.35
Hence, the correct answer is 1.35.
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