Looking at the permutation formula, we have n!/(n-r)!. n is the number of objects to select from and r is how many are to be picked at once. And 1 means multiply from there down basically. 5!/(5-4)!= 5*4*3*2*1/1. 5 times 4 is 20 times 3 is 60 times 2 is 120 times 1 is 1 so 120/1 is 120. There are 120 total combinations to be made from P, Q, R, S and T.
Answer:
50/50 percent chance
Step-by-step explanation:
There's only two sides so its only a 50/50 percent chance for it to land on head
Answer: Y= -x/5 + 32/5
Step-by-step explanation:
Hello, right answer is B) twice the original number
If you divide a number for a fraction, you are multiplying that number for the opposite of that fraction (so 1/2 = 2)
This means 4 : 1/2 = 4*2 = 8
Instead, if you multiply a number for 1/2, you are dividing it for 2.
Hope it helps :)