To answer this question, use permutation since the order of the letter matters. There are 7 letters and only 4 are to be used for the code. This is a permutation of 7 taken 4 (7P4) which is equal to 840. Thus, the sample space is 840.
For the next questions, there are 3 vowels for as the first letter, only 6 letters are available for the second, 5 on the next, and 4 on the last. Multiplying these numbers give 360. To solve for probability, divide this number with the sample space. Thus, the answer is 3/7.
I believe the answer is c
Answer:
v=πr^2h
v/πr^2=h
Step-by-step explanation:
I think it’s 236.8 correct me if I’m wrong?
Answer:
a scalene triangle
Step-by-step explanation:
all angles are different lengths
