Question

Find (1 - 1/2)(1 - 1/3).......(1 - 1/20) =?

• A. 19/20
• B. 1/21
• C. 1/20
• D. 1

Answer 1

Answer:

C. 1/20

(1 - 1/2)(1 - 1/3).......(1 - 1/20) = 1/2 × 2/3 × 3/4 × ........... × 19/20 = 1/20