Correct option is A
Given: 8271634
Add 1 to each odd digit and subtract 2 from each even digit.
8 - 2 → 6
2 - 2 → 0
7 + 1 → 8
1 + 1 → 2
6 - 2 → 4
3 + 1 → 4
4 - 2 → 2
2 - 2 → 0
7 + 1 → 8
1 + 1 → 2
6 - 2 → 4
3 + 1 → 4
4 - 2 → 2
New number: 6082442
Now check which digits appear more than once:
6 → once
0 → once
8 → once
2 → twice
4 → twice
6 → once
0 → once
8 → once
2 → twice
4 → twice
Digits that appear more than once: 2 and 4
So, Two digits will appear more than once in the new number thus formed.
Thus, correct option is (a).
English
100 Questions
100 Marks
90 Mins
