A question paper had 10 questions Each question could only be answered as True(T) or False(F) Each candidate answered all - Maths - Probability

Question

A question paper had 10 questions Each question could only be
answered as True(T) or False(F) Each candidate answered all
questions Yet , no two candidates wrote the answers in an identical
sequence How many different sequences of answers are possible ?
a 20
b 40
c 512
d 1024
(IAS-PRE-2010)

Tushar Kohli · Accepted Answer

Different sequences possible = 210 = 1024
Hence (D) is the correct option

A question paper had 10 questions.Each question could only be answered as True(T) or False(F).Each candidate answered all questions. Yet , no two candidates wrote the answers in an identical sequence.How many different sequences of answers are possible ? a 20 b 40 c 512 d 1024 (IAS-PRE-2010)

A question paper had 10 questions.Each question could only be answered as True(T) or False(F).Each candidate answered all questions. Yet , no two candidates wrote the answers in an identical sequence.How many different sequences of answers are possible ?

a 20

b 40

c 512

d 1024

(IAS-PRE-2010)