## Search found 22 matches

Mon Dec 16, 2013 10:53 am
Forum: Physics
Topic: beloon
Replies: 2
Views: 1835

### beloon

when a beloon goes to the sky it blast though the temparature and pressure reduce gradually.why?
Sat Nov 30, 2013 12:19 am
Forum: Physics
Topic: SURFACE TENSION
Replies: 1
Views: 1700

### SURFACE TENSION

an object is fully under water.will it feel surface tension?
Fri Feb 01, 2013 9:54 pm
Forum: Social Lounge
Topic: why not prize
Replies: 1
Views: 1870

### why not prize

Different countries give prizes to mathematicians.can't we introduce any prize in bangladesh.it can be in the name of a great mathematician of our country.
Thu Jan 24, 2013 5:42 pm
Forum: Physics
Topic: will it come back
Replies: 9
Views: 3963

### will it come back

suppose i have a ball having the same mass of the earth.i throw it in the sky.will it come back?
Thu Jan 24, 2013 5:27 pm
Forum: Number Theory
Replies: 8
Views: 3326

i mean all factors.such as 8 has 4 factors
Sat Jan 19, 2013 2:48 pm
Forum: Combinatorics
Topic: from 1 to 100
Replies: 8
Views: 3875

### Re: from 1 to 100

We can take \$\displaystyle \binom {100}{2}=4950\$ pairs. Now the least result is \$1+2=3\$ and the greatest is \$100+99=199\$. So only \$197\$ results are different and \$4950-197\$ results are same.
Thu Jan 17, 2013 10:02 pm
Forum: Number Theory
Replies: 8
Views: 3326

a,b,c,d,.....is a sequence.the number of factors of a,b,c,d,....is 2,3,4,5,....find the minimum value of a in natural number
Thu Jan 17, 2013 9:50 pm
Forum: Combinatorics
Topic: from 1 to 100
Replies: 8
Views: 3875

### Re: from 1 to 100

there is a very shortcut solution.can anyone find it?
Thu Jan 17, 2013 6:24 pm
Forum: Combinatorics
Topic: from 1 to 100
Replies: 8
Views: 3875

### Re: from 1 to 100

i want the answer that how many answers will be same.for example 100 can be got in 49 ways,99 can be 50 ways....i want the total sum.
Wed Jan 16, 2013 2:41 pm
Forum: Combinatorics
Topic: from 1 to 100
Replies: 8
Views: 3875

### from 1 to 100

take any two number from 1 to 100.add them.how many results will be same