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Question

The positions of the first and fifth digits in the number $$87513269$$ are interchanged. Similarly the
positions of the second and the sixth digits are interchanged and so on. Which of the following will
be the second to the right of the seventh digit from the right end after rearrangement? 


A
7
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B
6
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C
9
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D
4
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Solution

The correct option is C $$9$$
Given: The position of the first and fifth digits in the number 87513269 are interchanged.
After first interchange
37518269
After second interchange
32518769
After third interchange
32618759
After fourth interchange
32698751
Starting from the right, seventh digit from the right is 2.
now 2nd right of 2 is 9.
$$\therefore$$ option C is correct.

Mathematics

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