Question

A die was rolled 200 times and hence the number of times 4 comes up was noted. if probability of getting 4 is 2/5, then how many times did 4 come up?

Answer 1

let the number of time 4 comes up be x.

then, probability(getting 4)=

$\frac{number\:of\:times\:4\:come}{total\:number\:of\:trials}$

$\frac{2}{5}=\frac{x}{200}$

after cross multiplication,

400=5x

x=80

Answer 2

SOLUTION___✍️

Here, total number of trials= 200times

let x be the number of times occurring 4.

Probability= Frequency of the event occurring/Total no. of trials

So,

= x/200= 2/5 {probability is given}

= 5x= 400

=x= 400/5

=x= 80 times come up Ans.

$mark \: brainliest$