perplexus.info :: Just Math : Which integer was removed?

Which integer was removed? (Posted on 2015-06-15)

Precisely one number is removed from the set of positive integers from 1 to n. The average of the remaining numbers is 40.75.

Which integer was removed?

Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Solution: (Hide)

(n, x) = (81, 61).
Hence, the number removed from 1 to 81 must be 61.
For an explanation, refer to:
The solution submitted by Jer in this location..
The solution submitted by broll in this location..

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Thoughts	broll	2015-06-16 00:20:57
Solution	Jer	2015-06-15 09:12:18

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