The result of rolling a number cube 7 times is a 7-digit number composed of digits 1,2,3,4,5 and 6 so that digits can repeat. The total number of possibilities is 6^7.
The number of possibilities where 4 appears exactly two times is 5^5*(7!-6!/2).
5^5 is the number of 5-digits numbers composed of digits 1,2,3,5 and 6 so that digits can repeat.
7! is the number of permutations of digits 1,2,3,4,4,5 and 6.
6! is the number of permutations of digits 1,2,3,{4,4},5 and 6.
We don't want to subtract all numbers where digits 4 appear side by side. That's why we must divide 6! by 2.
Finally, the probability is P=5^5(7!-6!/2)/7^7
Answer:
D. the hospital with 310 beds
Step-by-step explanation:
just did it in edge
Answer:
Phone B
Step-by-step explanation:
It is around the same cost as Phone C, but has unlimited data (which means unlimited gigs)
When dividing three real numbers the order can effect the answer.
Example:
8:4:2
1. 8:4:2=(8:4):2=2:2=1;
2. 8:4:2=8:(4:2)=8:2=4.
As you can see the results are different.
Answer: It is not true.
Answer:
area = 10.28 units²
Step-by-step explanation:
Smallest prime numbers I can think of is 2, 3 & 5 but that will not make a triangle.
3, 5, & 7 will
area = 1/2(7)(2.9375) = 10.28 units²
