Answer:
10
Step-by-step explanation:
The possibilities are HH TT HT TH so to get TT you have a 1/4 chance (25%)
Answer:
9 (2p + 1)
Step-by-step explanation:
(18p + 9)
GCF = 9
so, divide everything by 9
9 (2p + 1)
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.
R S + 14(S) R=6 S=1/4
(6)(1/4) + 14(1/4)
1.5 + 14(1/4)
1.5 + 3.5
5
