Question

two coins are tossed simultaneously 500 times we get two heads 105 times, one head 275 times no head 120 times find the probability of getting (¡) exactly one head (ii) atleast one head (iii)almost one head (iv) two tails​

Answer 1

Answer:

i)11\20 ii) 19\25 iii)79/100 iv) 99\100

Step-by-step explanation:

i) P(e) = favourable outcomes

total no. of outcomes

P(e1) =275

500

=11

20

ii)P(e2) =105+275

500

=380

500

=19

25

iii)P(e3) =275+120

500

=395

500

=79

100

iv)P(e4) = 395

500

=79

100