Answer:
D
Step-by-step explanation:
The diagram shows Pascal's triangle. Pascal's triangle is a triangular array of the binomial coefficients.
The entry in the 
row (start counting rows from 0) and 
column (start counting columns from 0) of Pascal's triangle is denoted by
Coefficient 20 stands in 6th row, then n = 6 and in 3rd column, so k = 3.
Hence,
A. sum of rational and irrational and it ends up being rational
Answer:
(A,C)
Step-by-step explanation:
i think
If you are talking about using a factor tree, then it would go into 5 and 10
5 is a prime number so you'll divide 10 into 5 and 2. So 2x5x5=50 :)
