Question

1. When a coin tossed n times (n € N), the sample space contains
(A) 2n elements (B)(n-1) elements
(C) n'elements (D) 2 elements​

Answer 1

Answer:

ANSWER

If coin is tossed n times then possible number of outcomes =2

n

Number of ways in which head comes odd number of times =

n

C

1

+

n

C

3

+

n

C

5

.......

Sum of odd coefficient in the expansion of (1+x)

n

=

2

2

n

=2

n−1

∴ desired probability =

2

n

2

n−1

=

2

1

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Answer 2

Step-by-step explanation:

when coin is tossed n times

2n