Search found 53 matches

by Shifat
Fri Aug 12, 2011 11:52 pm
Forum: Junior Level
Topic: Divisible by 24
Replies: 7
Views: 3401

Re: Divisible by 24

Shahriar bhaia odd^2 -1 is not always dividable by 3, suppose 9^2-1 !!! but if they r prime and greater than 3 then u can write the prime number as (3n+2) or (3n+1),where n belongs to N then square it and minus 1 from it, the results will be either (9n^2+12n+3) or (9n^2+ 6n)... in both cases they ar...
by Shifat
Fri Aug 05, 2011 3:10 am
Forum: Secondary: Solved
Topic: Rangpur Secondary 2011/2
Replies: 5
Views: 5619

Re: Rangpur Secondary 2011/2

-27<fg<-2..should be.
by Shifat
Fri Aug 05, 2011 2:55 am
Forum: Secondary: Solved
Topic: Dhaka Secondary 2011/2 (Junior 2011/4)
Replies: 8
Views: 7430

Re: Dhaka Secondary 2011/2 (Junior 2011/4)

bro i did not get your solution, can u describe it even more clearly??@hasib bro