Answer
i think it has something to do with science
Step-by-step explanation:
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
Answer:
a. 7
Step-by-step explanation:
7x7=49
There are 6 squares so u multiply 6x3=18 is the total surface area