Answer: ![\dfrac{1}{220}](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B220%7D)
Step-by-step explanation:
Given
There are 3 marbles of red, blue, green and orange
Total marbles are 12
No of ways of choosing 3 green marbles out of 3 green marbles is ![^3C_3](https://tex.z-dn.net/?f=%5E3C_3)
Total no of ways of selecting 3 marbles out of 12 are ![^{12}C_3](https://tex.z-dn.net/?f=%5E%7B12%7DC_3)
So, the probability is
![\Rightarrow P=\dfrac{^3C_3}{^{12}C_3}=\dfrac{1\times 3\times 2\times 1}{12\times 11\times 10}\\\\\Rightarrow P=\dfrac{1}{220}](https://tex.z-dn.net/?f=%5CRightarrow%20P%3D%5Cdfrac%7B%5E3C_3%7D%7B%5E%7B12%7DC_3%7D%3D%5Cdfrac%7B1%5Ctimes%203%5Ctimes%202%5Ctimes%201%7D%7B12%5Ctimes%2011%5Ctimes%2010%7D%5C%5C%5C%5C%5CRightarrow%20P%3D%5Cdfrac%7B1%7D%7B220%7D)
You do 29 divided by 9 and that equals 3 2/9
( b ) is the answer I think :)
Answer:
x = 64
Step-by-step explanation:
looking at the other sides, you find that each side had just been doubled.
Total is 1120
interest is 3.5
interest earn in 1 yr be p
so is p/ 100 × 3.5 ×4 = 1120
1120÷4= p/100x 3.5
280=p/100 x 3.5
280÷3.5= p/100
80=p/100
p= 8000