Answer:
20
Step-by-step explanation:
You have to fill in 6 slots _ _ _ _ _ _.
Since first digit must be 4, there is only 1 way to fill in the 1st slot.
with the 5 slots, we fill in the 6s first, 3 of them.
So we have 5 options and 3 items to fill, (5 choose 3).
Then 2 ways to fill 1 and 1 way to fill 5. (It doesn't matter if you pick 5 or 1 first).
So it becomes (5C3) * (2C1) *(1C1)
= 1 * 5!/(3!)(5-3)! * (2) * 1
= 20
Answer:
22
Step-by-step explanation:
sorry if its wrong i dont know the answer choices
Answer:
25
Step-by-step explanation:
x = (5(3)) + (5(2))
x = 15 + 10
x = 25
I believe the answer it 2! 50 is 1/5 of 250, 10 is 1/5 of 50, and 2 would be 1/5 of 10! I hope this helps!
Answer:
5 : 9
Step-by-step explanation:
