Question

two coins are tossed simultaneously find the probability that exactly two head or at least one tale​

Answer 1

Answer:-

→ Here are the outcomes when 2 coins are tossed simultaneously where H denotes Heads and T denotes Tails.

HH, TT, HT, TH

1. Probability of getting exactly one head is 2/4 = 1/2

2. Probability of getting at most one tail is = 3/4

Additional information:-

★ When two coins are tossed simultaneously What is the probability of getting one head?

→ If you flip a coin one time, the probability of getting two heads is zero.

If you flip a coin a billion times, the probability of getting two heads is nearly one.

If you flip a fair coin twice, there are four possible outcomes (HH, HT, TH, TT)

Hence, the probability of tossing two heads is 1/4.

Answer 2

$\huge \mathfrak \red{answer}$

________________________________

Question:✥

two coins are tossed simultaneously find the probability that exactly two head or at least one tale

_______________________________

step to step explanation:✥

sample space are {H H} {H, T} {T, H} {T, T}

• t means tail
• h means head

so n (A) = n(4) then,

➷let take A will be the exactly two head

so

A ={HH} then n (A)

$\sf{p(A) = \frac{n(A)}{n(S)} = \frac{1}{4}}$

___________________________

now let take B will be getting atleast one tail from given question

then B = { HT TH TT}

n(B) = 3

then

$\sf{ p(B) = \frac{n(B)}{n(S)} = \frac{3}{4}}$

then A and B are both exclusive

___________________________

now used the probability formula

p(AUB) = p(A) + p(B)

then

p(AUB) =

$\sf{ \frac{1}{4} + \frac{3}{4}}$

$\sf{ = 1}$

so.,

the probability that exactly two head or at least one tale is 1