AP ICET 2016 Paper

Question : 150 of 200

Marks: +1, -0

If 7 coins arc tossed at random, then the probability that even number of heads appear i

Solution:

Total no. of possible outcomes

=27=128

No. of favourable outcomes of getting even number of heads

=^{7}C_{0}+^{7}C_{2}+^{7}C_{4}+^{7}C_{6}=64

∴ Required probability

=64/128=1/2

Go to Question:

Prev Question

Next Question