There are 10 questions, each question is either True or False. Number of different sequences of incorrect answer is also equal to (I) Number of ways in which a normal coin tossed 10 times would fall in a definite order Heads and Tails are present.

Options

A. Number of ways in which a normal coin tossed 10 times would fall in a definite order if both Heads and Tails are present
B. Number of ways in which a multiple choice question containing 10 alternatives with one or more than one correct alternatives, can be answered.
C. Number of ways in which it is possible to draw a sum of money with 10 coins of different denominations taken some or all at a time
D. Number of different selections of 10 indistinguishable thing taken some or all at a time

Answer

B, C