Question : What is the ratio of 84 pens to 108 pens?
Option 1: 6 : 11
Option 2: 7 : 12
Option 3: 5 : 7
Option 4: 7 : 9
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Correct Answer: 7 : 9
Solution : According to the question ⇒ Ratio = $\frac{\text{Number of pens in first group}}{\text{Number of pens in second group}}$ = $\frac{84}{108}$ = $\frac{7}{9}$ Hence, the correct answer is 7 : 9
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