In the sequence 5, 9, 8, 1, 3, 2, 7, 4, 3, 8, the first and second digits are interchanged, as are the third and fourth digits, the fifth and sixth digits, and so on. Which digit would be seventh from the left?
A
1
B
4
C
7
D
8
Correct Option:
B
Explanation
Swap the digits in adjacent pairs: 5, 9 becomes 9, 5, 8, 1 becomes 1, 8, 3, 2 becomes 2, 3, 7, 4 becomes 4, 7, and 3, 8 becomes 8, 3. The resulting sequence is 9, 5, 1, 8, 2, 3, 4, 7, 8, 3. The seventh digit from the left is 4, making option (2) correct.
