<h3>
Answer: 0.1319</h3>
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Work Shown:

Side note: you can use the nCr formula to compute
; however, it's much quicker to use the shortcut formula
. You can also use Pascal's Triangle to find the value of 
You can make 6 different towers. If red was at the bottom, there'd be two different possibilities for that: red, yellow, blue, and red, blue, yellow. Same for if blue was at the bottom: blue, red, yellow, and blue, yellow, red. Yellow also applies: yellow, red, blue, and yellow, blue, red. 3*2=6, so 6 possible towers.
Y is the function of x so there are two things called Input and output
Answer:
bottom right 8 x 10^1
Step-by-step explanation:
multiply the numbers (2x4 is 8)
add the exponents of 10 (-3+4 is 1)
so the answer is the bottom right 8 x 10^1