Single Answer MCQ
Q-00051898
In how many ways can 4 letters be chosen from the letters A, B, C, D, E?
1
15
2
10
3
30
4
20
Answer and Solution
Answer
B. 10
Solution:
Using the formula nCr = n! / (r!(n-r)!), we find 5C4 = 5! / (4!1!) = 5. Therefore, the number of ways is 5.
Watch Video Solution