Search found 17 matches

by Mathlomaniac
Sat Mar 10, 2018 10:43 pm
Forum: Higher Secondary Level
Topic: Geometry
Replies: 1
Views: 3175

Re: Geometry

What is the source?
by Mathlomaniac
Sat Mar 10, 2018 10:25 pm
Forum: Higher Secondary Level
Topic: probability
Replies: 3
Views: 4871

Re: probability

mathlomaniac wrote: [/tfrac{8}{8C3}]
by Mathlomaniac
Fri Mar 09, 2018 5:49 pm
Forum: Higher Secondary Level
Topic: A problem of combinatorics
Replies: 9
Views: 10613

Re: A problem of combinatorics

36×35/2 =630
by Mathlomaniac
Thu Mar 08, 2018 10:36 pm
Forum: Secondary Level
Topic: Boxes and Cards Problem
Replies: 2
Views: 2571

Re: Boxes and Cards Problem

Answer Box No. $ 3$ Solution Note that $2015=2016-1=(12×168)-1$, So,2015 is in form $12k-1$ where $k=1,2,3,...$ We are placing cards in the boxes in such a manner that every 12th card will be plced at the same box....($1$) Now,We have to put card no.$11$ in the $3$ rd box(According to the statement...
by Mathlomaniac
Thu Mar 08, 2018 10:34 pm
Forum: Secondary Level
Topic: Greatest Positive Integer $x$
Replies: 7
Views: 4029

Re: Greatest Positive Integer $x$

Greatest possible integer value of X can be 88783 because 23 is repeated 88789 times in 2000!
by Mathlomaniac
Thu Mar 08, 2018 8:37 pm
Forum: Higher Secondary Level
Topic: Rightmost two digits of 3^999
Replies: 5
Views: 4492

Re: Rightmost two digits of 3^999

27 is correct answer.
by Mathlomaniac
Thu Mar 08, 2018 2:34 pm
Forum: Secondary Level
Topic: Greatest Positive Integer $x$
Replies: 7
Views: 4029

Re: Greatest Positive Integer $x$

Total times 23 and its multiple appear in 2000! Is 5213
Therefore maximum value of X would be 5213-6=5207