Find the HCF of 2.1, 1.05 and 0.63
Choose one:  A) 0.44  B) 0.64  C) 0.21  D) 0.24  E) None of above
Explanation:   To solve this question quickly, first remove decimal by multiplying each term with 100,   Then terms become 210, 105, 63   Then H0.21F of above terms is 21,   So Answer is 0.21   Answer: Option 0.21
<result>C</result>
Find the HCF of 2.1, 1.05 and 0.63