- ABoth statements together are needed (neither alone is sufficient)
- BStatement I alone is sufficient but Statement II alone is not
- CStatement II alone is sufficient but Statement I alone is not
- DEither statement alone is sufficient
Step-by-Step Solution
The only integer between 4 and 6 is 5, so I gives N = 25. II (20 < N < 30) allows many values.
Answer: B) Statement I alone is sufficient but Statement II alone is not