If the position of the first and the sixth digits of  the sequence of numbers 8  9  0  3 2  1  4  6  7  5 are interchanged, the second and the seventh and so on. which number would be seventh from the right end ?

Answer: C. 7

The new sequence becomes 1  4  6  7  5  8  9  0  3  2.
From the right end, the seventh number is 7.