If the other sweets are chocolates then 4 in every 5 sweets are chocolates so 4/5
Answer:
5
Step-by-step explanation:
3x5x7x9=945
9 is in the hundreds place
4 is in the tens
which means 5 must be in the ones
Answer: There are 177100 possible groups.
Step-by-step explanation:
Given: Total employees = 25
Number of employees wants to choose = 6
The combination of n things taken r at a time is given by:-
![^nC_r=\frac{n!}{r!(n-r)!}](https://tex.z-dn.net/?f=%5EnC_r%3D%5Cfrac%7Bn%21%7D%7Br%21%28n-r%29%21%7D)
Put n = 25 and r= 6, we get
![^{25}C_6=\frac{25!}{6!(25-6)!}\\\\=\frac{25\times24\times23\times22\times21\times20\times19!}{6!19!}\\\\=177100](https://tex.z-dn.net/?f=%5E%7B25%7DC_6%3D%5Cfrac%7B25%21%7D%7B6%21%2825-6%29%21%7D%5C%5C%5C%5C%3D%5Cfrac%7B25%5Ctimes24%5Ctimes23%5Ctimes22%5Ctimes21%5Ctimes20%5Ctimes19%21%7D%7B6%2119%21%7D%5C%5C%5C%5C%3D177100)
Hence, there are 177100 possible groups.
Answer:
a. 47
b. 87
c. 127
Step-by-step explanation:
Assume a total of 4 exams ( first 3 plus a final)
Let final score be X,
Hence, average score = (85 + 71 + 77 + x) / 4 = (233 + x) / 4
a) to get a C, the average score must be 70
70 = (233 + x) / 4
(233 + x) = 70 (4) = 280
x = 280 - 233 = 47 (Ans)
b) to get a B, the average score must be 80
80 = (233 + x) / 4
(233 + x) = 80 (4) = 320
x = 320 - 233 = 87 (Ans)
c) to get a A, the average score must be 90
90 = (233 + x) / 4
(233 + x) = 90 (4) = 360
x = 360 - 233 = 127 (Ans)
Answer:
60 mph
Step-by-step explanation: