Question

Four coins are tossed simultaneously. what is the probability that exactly 2 coins land on heads? make it as an %

Answer 1

total outcomes =2*2*2*2=16
possible outcomes =
possible outcomes =
TTTT
TTTH
TTHT
TTHH

THTT
THTH
THHT
THHH

HTTT
HTTH
HTHT
HTHH

HHTT
HHTH
HHHT
HHHH

Answer 2

there are \(2^4=16\) possible outcomes when you toss four coins
16 is not such a big number that we couldn't list them all
but it might be easier to know that 16 is your denominator and \(_4C_2\) is your numerator
do you know how to compute that number? "four choose two"

Answer 3

now choose that in which exactly 2 coins land on heads =5

Answer 4

now,
\[\large \bf probability=\frac{favourable~outcomes}{total~outcomes}=\frac{5}{16}\]

Answer 5

as you want in percent ,multiply by 100,
\[\large \bf \frac{5}{16} \times 100=31.25~percent\]

Answer 6

hope you understand ! @norajayy

Answer 7

understood ??? @norajayy

Answer 8

i get it alittle but im still confused i need more practice
and its not right 31.25% should i put 0.3125%

Answer 9

yeah... put this`

Answer 10

0.3125

Answer 11

we need probability !!