The G.C.D of 1.08, 0.36 and 0.9 is________?
Correct answer: C. 0.18
- A. 0.03
- B. 0.9
- C. 0.18
- D. 0.108
Explanation
Remove the decimals by multiplying all numbers by 100: 108, 36 and 90. Their H.C.F. is 18, so the decimal H.C.F. is 18/100 = 0.18. The likely wrong choice is 0.9, which is one of the original numbers rather than a common factor of all three.
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