Search found 158 matches

by Dipan
Sun Dec 19, 2010 11:22 pm
Forum: Higher Secondary Level
Topic: Find the Number of PrimeNumbers
Replies: 21
Views: 5527

Re: Find the Number of PrimeNumbers

@Anti..interfere korlam..don't mind .52 theke 71..
by Dipan
Sun Dec 19, 2010 11:17 pm
Forum: Higher Secondary Level
Topic: Find the Number of PrimeNumbers
Replies: 21
Views: 5527

Re: Find the Number of PrimeNumbers

@Anti ..52 theke 71.
by Dipan
Sun Dec 19, 2010 11:14 pm
Forum: Higher Secondary Level
Topic: Find the Number of PrimeNumbers
Replies: 21
Views: 5527

Re: Find the Number of PrimeNumbers

@Everybody...Ami nije solution{akhono solution ta hoiche kina don't know} ta korchi easy akta way te... Ques. e bola ache positive intigergulo getter than 50..tai prime number gulo of course odd..20 ta positive integer er modde 10 ta number odd...Again por por 3 ta odd number er modde at least 1 ta ...
by Dipan
Sun Dec 19, 2010 9:43 am
Forum: Higher Secondary Level
Topic: Sum of integers divide sum of integer powers
Replies: 3
Views: 1661

Re: Sum of integers divide sum of integer powers

I am posting a very easy solution....it can't be accepted by all....

we know that if k is odd then ...

a^k + b^k/a + b

so why we can't say that

a^k + b^k + ............. +n^k/a + b +.............+n [a,b belong to N and k is an odd]
by Dipan
Sun Dec 19, 2010 9:25 am
Forum: Higher Secondary Level
Topic: Find the Number of PrimeNumbers
Replies: 21
Views: 5527

Re: Find the Number of PrimeNumbers

The ans should be 3 if there is no twin prime.
by Dipan
Fri Dec 17, 2010 10:03 pm
Forum: Number Theory
Topic: Divisor Function!
Replies: 8
Views: 2836

Re: Divisor Function!

I am also interested........
by Dipan
Fri Dec 17, 2010 9:01 pm
Forum: Divisional Math Olympiad
Topic: Find all the digits
Replies: 8
Views: 2710

Re: Find all the digits

I think there is a mistake in the 3rd line..100-999.........(999-100+1)*3=900*3.