Question 1205045
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1/2 = 2/4
The first two terms are 3/4 and 2/4
Divide the numerators only (2nd term over 1st) and we get <font color=red>r = 2/3</font> as the common ratio.
We can ignore the denominators because they cancel out when dividing. This applies only when we have the LCD.


Or you could look at the 2nd and 3rd terms
1/2 = 3/6
1/3 = 2/6
The 2nd and 3rd terms, when finding the LCD, are 3/6 and 2/6 in that order. Follow the same idea as the previous paragraph to get <font color=red>r = 2/3</font>


I'll let you check the other pairings.
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