Nishit Sinha | Average-Advanced

Please solve the Q6 and Q7.
Q6. We write down all the digits from 1-9 side by side. Now we put ‘+’ between as many digits as we wish to, so that the sum of numbers become 666.

It is explained below
1 2 3 4 5 6 7 8 9 = 666
Now suppose we put plus signs at following places:
12 + 345 + 67 + 89 = 513
What is the average if the sum is 666?
a. 166.5             b. 111       c. 133.2      d. cannot be determined

Q7. what is the average if the sum is 261?
a. 54             b. 52.2           c. 55            d. None of these

ans

Q-6,

1+2+3+4+567+89=666

so average=111

also, 123+456+78+9=666

so average=166.6

may be third also possible

Q-7,

 123+45+6+78+9=261

so average=52.2

 

Little Star

 

 

ans

Q-6,

1+2+3+4+567+89=666

so average=111

also, 123+456+78+9=666

so average=166.6

may be third also possible

Q-7,

 123+45+6+78+9=261

so average=52.2

 

Little Star

 

ans

Q-6,

1+2+3+4+567+89=666

so average=111

also, 123+456+78+9=666

so average=166.6

may be third also possible

Q-7,

 123+45+6+78+9=261

so average=52.2

 

Little Star

 

a

Q-6,

1+2+3+4+567+89=666

so average=111

also, 123+456+78+9=666

so average=166.6

may be third also possible

Q-7,

 123+45+6+78+9=261

so average=52.2

 

Little Star

 

Question 19-21

Can some one post the solution of
Question 19-21 of the same chapter (Average and their application by Nishit K. Shina)

Its on page 111. .questions on entrance exam of IIMs

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