If 6.25 is to be rounded off it is rounded off to A and if 6.35 is to be rounded off it is rounded off to B. Here, A and B refer to

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A $\to$ 6.2, B $\to$ 6.4

A $\to$ 6.3, B $\to$ 6.4

A $\to$ 6.1, B $\to$ 6.3

A = 6.1, B = 6.2

answer is A.

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Detailed Solution

If the rightmost digit to be removed is 5, then the preceding number is not changed if it is an even number but it is increased by one if it is an odd number. e.g. if 6.35 is to be rounded by removing 5, we have to increase 3 to 4 giving 6.4 as the result. However, if 6.25 is to be rounded off it is rounded off to 6.2

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