Alex wrote the following indirect proof:
Prove: 13 is a factor of 195

Step 1: Assume that 13 is not a factor of 195.

Step 2: 195 divided by 13 is 15.

Step 3: A factor is an integer by which another integer is a multiple.

Step 4: Therefore, 13 must be a factor of 195.

Which step in Alex's proof is incorrect? (1 point)

Question 10 options:

1) Step 1
2) Step 2
3) Step 3
4) Step 4

Question

Alex wrote the following indirect proof:
Prove: 13 is a factor of 195

Step 1: Assume that 13 is not a factor of 195.

Step 2: 195 divided by 13 is 15.

Step 3: A factor is an integer by which another integer is a multiple.

Step 4: Therefore, 13 must be a factor of 195.

Which step in Alex's proof is incorrect? (1 point) 

Question 10 options:

 1) Step 1 
 2) Step 2 
 3) Step 3 
 4) Step 4

anonymous · Answer

step1...!!!

you have to assume it is a factor of 195 to prove it...

anonymous · Answer

thanks