Question

Amit bought 3 litres of milk in the morning and 11 by 2 litres was left in the evening how much was used
$\sqrt[2455 \sqrt[2222222]{3} ]{225}$
​

Answer 1

Step-by-step explanation:

We know the formula for mean.

\bold{\large{\boxed{\tt{\green{Mean\:=\:{\dfrac{Sum\:of\:observations\:}{Number\:of\:observations}}}}}}}

Mean=

Numberofobservations

Sumofobservations

Mean = 50

Sum of observations (unknown)

Number of observation = 100

\leadsto⇝ \tt{50\:=\:{\dfrac{Sum\:of\:observation\:}{100}}}50=

100

Sumofobservation

\leadsto⇝ \tt{50\:\times\:100\:=\:Sum\:of\:observations}50×100=Sumofobservations

\leadsto⇝ \tt{5000\:=\:Sum\:of\:observations}5000=Sumofobservations

\tt{\therefore{Sum\:of\:100\:observations\:having\:mean\:50\:is\:5000}}∴Sumof100observationshavingmean50is5000

One of the observation is replaced :

•°• New sum of the 100 observation will be,

\leadsto⇝ \tt{5000\:-50\:+\:150}