There are 10 true-false questions in an examination. Then these questions can be answered in
A. 20 ways
B. 100 ways
C. 240 ways
D. 1024 ways
Answer:D
There are 10 true-false questions in an examination. Then these questions can be answered in
A. 20 ways B. 100 ways C. 240 ways D. 1024 ways