Notice this is a geometric progression since each number multiplied by some factor equals the next number in the sequence, in this case,

Then by applying the formula for sum to infinity of a geometric progression,
Answer:49.5
Step-by-step explanation:
To find the 45% of 110
45/100×110
=49.5
I believe 25 has to be added as
(x*5)^2 = x^2 + 10x + 25
Answer:
Probability that first shirt is white and second shirt is gray if first shirt selected is set aside = 
Step-by-step explanation:
Given that
3 white, 2 blue and 5 gray shirts are there.
To find:
Probability that first shirt is white and second shirt is gray if first shirt selected is set aside = ?
Solution:
Here, total number of shirts = 3+2+5 = 10
First of all, let us learn about the formula of an event E:



Now, this shirt is set aside.
So, total number of shirts left are 9 now.

So, the answer is:
Probability that first shirt is white and second shirt is gray if first shirt selected is set aside = 
A. 24/7 because tangent is opposite/adjacent in this case from angle a 24 is on the opposite side while 7 is adjacent