MathDB
Problems
Contests
International Contests
IMO Longlists
1970 IMO Longlists
38
38
Part of
1970 IMO Longlists
Problems
(1)
The greatest A for which there exist 10 consecutive numbers
Source: IMO LongList 1970 - P38
5/21/2011
Find the greatest integer
A
A
A
for which in any permutation of the numbers
1
,
2
,
…
,
100
1, 2, \ldots , 100
1
,
2
,
…
,
100
there exist ten consecutive numbers whose sum is at least
A
A
A
.
combinatorics proposed
combinatorics