Answer:
252
Step-by-step explanation:
The order of the books isn't important, so we'll use combinations.
The number of ways to choose 5 books from 10 is:
₁₀C₅ = 10! / (5! (10 − 5)!)
₁₀C₅ = 10! / (5! 5!)
₁₀C₅ = 10×9×8×7×6 / (5×4×3×2×1)
₁₀C₅ = 252
28% because 25x4=100 7x4=28
Answer:
49 in the first box and 7 in the second one
25 in the 3rd box and 5 in the 4th
The answer to your question is c)15
