Answer:
The area of building c minus the area of building b equals the area of building a might be correct?
Answer:
2^-4, 1/16, (1/2)^4
There is a rule with exponents, if you are dividing two exponents you subtract the first exponent from the other to simplify it, also meaning it's equivalent.
So in this case 5-9 = 2^-4
The others were found by evaluation.
Proof with explanation:
We know that the sum of first 'n' terms of a Geometric progression is given by
where
a = first term of G.P
r is the common ratio
'n' is the number of terms
Thus the sum of 'n' terms is
Now the sum of first '2n' terms is
Now the sum of terms from 
to 
term is 
Thus the ratio becomes
There are 26 letters in the English Alphabet. 20 of them are Consonants and 5 of them are vowels. The letter Y is an exception that can fit into either category.
