Hello
I want to calculate natural logarithm of sum of combinations as follow:
(R code)
{
com_sum=choose(2000000,482)*choose(1000000,118)+choose(2000000,483)*choose(1000000,117)+...+choose(2000000,i)*choose(1000000,600-i)+...+choose(2000000,600)*choose(1000000,0)
#calculate the sum
result=log(com_sum) #calculate
the log of the sum
}
But every element of the com_sum is Inf, so I can't get the result
Thank you in advance
Yours sincerely
ZhaoXing
Department of Health Statistics
West China School of Public Health
Sichuan University
No.17 Section 3, South Renmin Road
Chengdu, Sichuan 610041
P.R.China
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