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For The Mathematically Inclined

Anil Saigal

Problem 1:

John computes that the mean of 25 items in his grocery bill is $3.14. He realizes that he made a mistake in price of an item. Instead of $4.50 he used $5.50.  What should be the actual mean of his grocery bill?

Problem 2:
Five integers are in the ratio 1: 2: 3: 4: 5.  Their arithmetic mean is 12. What is  the smallest of these numbers.


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Problems from M-05/06/21

Problem 1
A triangle has one side long 71 m and its two internal angles is 60°.  What is its perimeter?

Problem 2
If 6, 19 and x are the lengths of the sides of triangle. How may possible values can x hold?

Congratulations to Nagaraj Katti, who was the winner of the last set of problems.

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