There are 10 letters in the set {a, b, c, d, e, f, g, h, i, j} which is the pool of letters to choose from when making these three letter codes.
We have 10 choices for slot 1
Then 9 choices for slot 2. This is because we can't reuse the choice for slot 1
Then 8 choices for slot 3
Overall, there are 10*9*8 = 90*8 = 720 different permutations
Answer: 720
Note: you can use the nPr permutation formula with n = 10 and r = 3 to get the same answer
How many 8 can we fit in 144?
Start with 8•10=80, can’t fit another 80 so
Continue with 8•5=40 we have now 80+40=120 and we need 144 so are left 24
Finish with 8•3=24
Now we can group them
Multiplication: 8•10+8•5+8•3=144
Distributive : 8•(10+5+3)=144
So 144/8=10+5+3=18
Answer:
0.4 pounds
Step-by-step explanation:
300 divided by 120= 0.4, meaning you need 0.4 pounds of flour for 1 cake
Answer:
well, only 87 people were asked. How did they get 482?
also, they should have asked the people in the library.
Answer:
32cm of tape
Step-by-step explanation:
8cm*4= 32cm
