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Question

Match the following.


Your Answer
A
13
Your Answer
B
15
Your Answer
C
1
Your Answer
D
12

Solution

The correct option is
Consider 1721 and 1021, which are like fractions as they have the same denominator.
While subtracting like fractions, we subtract the numerators and keep the denominator as it is.
i.e., 17211021=171021=721, which is equivalent to 13.
Thus,  17211021=13
Similarly,  1215915=315=15 and
 1010510=510=12
Now consider the addition of the like fractions1015 and 515. We add the numerators up and keep  the denominator as it is. Thus, 1015+515=10+515=1515=1

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