a) 24
b) 48
c) 96
d) 64
Answer: b
Explanation: 5 questions can be selected in the following ways,
2 question from first group and 3 question from second group
Or
3 question from first group and 2 question from second group.
= (4C2 × 4C3) + (3C4 × 4C2)
= 24 + 24
= 48
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