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#1 Re: Help Me ! » probability » 2015-07-18 07:19:12
Oh, OK thanks
#2 Re: Help Me ! » probability » 2015-07-16 18:18:38
I mean I shouldn't do that in this problem
#3 Re: Help Me ! » probability » 2015-07-16 18:17:35
#4 Re: Help Me ! » probability » 2015-07-16 06:25:38
But i can't still solve for n
Any way to do it?
#5 Re: Help Me ! » probability » 2015-07-05 19:28:03
Thanks, its correct. Can you please tell me how you found this? Please
Oh i got it thanks!
#6 Re: Help Me ! » log(a,x)=a^x » 2015-05-19 19:01:36
yeah! , thanks.
Can you say how you found it?
#7 Re: Help Me ! » log(a,x)=a^x » 2015-05-19 00:43:27
a is base
#8 Re: Help Me ! » probability » 2015-05-11 23:00:29
well, just the type matters, i mean we have infinit amount for each color.
#9 Re: Help Me ! » probability » 2015-05-10 23:25:57
yes 300 different colors.
original question is:
there can be 300 types of neuron in a nerve, how many neuron should be in a nerve so we be sure more than 50% that we have two neuron with same type in that nerve?
#10 Help Me ! » probability » 2015-05-10 04:36:23
- Nemexia
- Replies: 14
imagine we have 300 different balls possible, at least how many balls should we have so we be sure more than 50% that we have two balls with same color?
i guess the equation would be this (not sure):
300 * C(n,2) * (1/300)^2 * (299/300)^(n-2) ≥ 0.5
and i got answer 19
can anyone solve it?
#11 Re: Help Me ! » about squares of numbers » 2015-05-10 04:08:52
Well there is no magic, its so simple:
as you see
1²-0²=1
2²-1²=3
3²-2²=5
.
.
.
x²-(x-1)²=odd number because:
x²-(x-1)²=x²-(x²-2x+1)=x²-x²+2x-1=2x-1
2k-1 always gives odd numbers 
#12 Help Me ! » log(a,x)=a^x » 2015-05-10 03:35:10
- Nemexia
- Replies: 8
we have two functions:
f(x)=log(a,x)
g(x)=a^x
a=??
in what "a" the graph of these two hit each other in only one point?
i think it has the same meaning as:
in what "a" the following equation has only one answer:
log(a,x)=a^x
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