Algebra-2

The missing number is 35.

 

In Pascal's Triangle, each number (except for the 1s on the edges of each row) is the sum of the two numbers directly above it in the previous row.

 

For the eighth row where the missing number is located, we look at the seventh row which has the numbers 1, 6, 15, 20, 15, 6, 1.

 

The number we need to find in the eighth row has the two numbers 20 and 15 directly above it from the seventh row. When we add 20 and 15 together (20 + 15), we get 35.

 

So the completed Pascal's Triangle would be:

                    1

             &n...