perplexus.info :: Just Math : The Deleted Number

The Deleted Number (Posted on 2003-08-27)

A professor writes N consecutive natural numbers, beginning with 1, on the blackboard. One of the students in the class deletes one of the numbers (exactly one number), from that list.
Now, given that the average of the remaining N-1 numbers is 271/16.
Can you find out the number that has been deleted from the list ?

See The Solution Submitted by Ravi Raja

Rating: 2.6667 (3 votes)

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

Subject	Author	Date
Puzzle Solution: Method III	K Sengupta	2022-02-06 23:09:29
Puzzle Solution	K Sengupta	2022-02-06 22:22:11
Puzzle Solution: Method II	K Sengupta	2022-01-27 02:01:27
Puzzle Solution: Method I	K Sengupta	2022-01-27 01:40:53
Answer	K Sengupta	2022-01-27 01:25:04
The solution	Richard Briscoe	2003-09-03 04:09:33
Solution	Lawrence	2003-08-28 02:38:18
another 'method'?	Lee	2003-08-28 02:27:12
Solution Method	DJ	2003-08-27 16:39:21
another method	Charlie	2003-08-27 16:16:27
re: spoiler	Your buddy	2003-08-27 15:24:46
My solution	H	2003-08-27 15:22:02
spoiler	Your buddy	2003-08-27 15:13:41

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