Let us use the counting spaces method to solve this question.
2 key things to notehere.
The first place can be filled in 4 ways. We can chose any one of the four lettters - B, C, D or E.
On doing so we are left with only 3 choices for the second place. Similarly, on filling the
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2 key things to notehere.
- 1. The third place is filled by the letter "A", so we have only 4 places left to fill
2. There are no constraints on the letters that can occupy these 4 places. Hence, we can use any letter to fill any place.
The first place can be filled in 4 ways. We can chose any one of the four lettters - B, C, D or E.
On doing so we are left with only 3 choices for the second place. Similarly, on filling the
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