Question

1) Interview Questions -
(5)
A Brilliant Student from your school has stood first in S.S.C Board Examination in March
2020.
Frame Questions to interview him/her. Follow the steps given below
1) Greeting
2) Introduction of the interviewee and achievements.
3) 2 or 3 Questions about growing years.
4) 4 to 6 Questions about the achievements.
5) 2 or 3 Questions about Future plans and prospects.
6) Expressions of thanks and good wishes.​

Answer 1

Answer:

So, it will be something like this:-

\rm{\dfrac{x_1 +x_2 ...}{100} = 50}

100

x

1

+x

2

...

=50

So, what we need to do is, find the value of resulting mean.

But, here is a glitch.

50 is replaced by 150, so how we can rearrange it back?

We can do it!

\rm{\dfrac{x_1 +x_2 ...}{100} = 50}

100

x

1

+x

2

...

=50

\rm{x_1 +x_2 ...= 50 \times 100}x

1

+x

2

...=50×100

\rm{x_1 +x_2 ...= 5000}x

1

+x

2

...=5000

Now, we will add 150 to the 5000, because it is the new mean.

But, what will happen of that 50? It was already included!

Simple, we will subtract it.

5000 +150 = 5150

And, subtracting the already included replaced value,

5150 - 50 = 5100

So, resulting mean is 5100. Hence the answer.