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Q: What does the r variable represent and what does the n variable represent in math?

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It can represent anything you want it to. The conventional use is that it represents the number of successes.

p v = n r t v = n r t / p

If an amount C is invested for n years with an interest rate of r%, then the amount of interest earned is C*n*r/100

"Respective" means "in that order". So, for example, weights of 1 Newton, 2 N and 3 N at points p q and r respectively, menas a weight of 1 N at point p, 2 N at q and 3 N at r.

n p =n!/(n-r)! r and n c =n!/r!(n-r)! r

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It can represent anything you want it to. The conventional use is that it represents the number of successes.

nCr=n!/r!/(n-r)!

P V = n R TDivide each side by ( n T ):(P V) / (n T) = R

If you have N things and want to find the number of combinations of R things at a time then the formula is [(Factorial N)] / [(Factorial R) x (Factorial {N-R})]

p v = n r t v = n r t / p

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a letter it could be a b c d e f g h i j k l m n o p q r s t u v w x y z anything

suppose n is a number i.e n=325 First we shall divide that number by 10 then store this number in a variable called quation i.e q=n/10 here q=32 . we take one variable say m and store the value of n in that variable i.e n=m And then we shall find remender of that number by dividing 10 i.e n=n%10 we get 5 then we will reverse that number i.e r=r*10+n and then we will repeate the same step if reverse of that number is same as the number entered then that number is called paindrom code: class palindrom { public static void main(String args[]) { int n,m,s,r; n=m; for(s=0;n>0;) { q=n/10; r=n*10; s=s*10+r; n=q; } if (m==r) { System.out.println("Palindrom"); } else { System.out.println(" not Palindrom"); } } } Wrriten By:-Rajkumar Gupta

If an amount C is invested for n years with an interest rate of r%, then the amount of interest earned is C*n*r/100

Assuming that x represents multiplication, it is p times r times n or prn.

A geometric series represents the partial sums of a geometric sequence. The nth term in a geometric series with first term a and common ratio r is:T(n) = a(1 - r^n)/(1 - r)

nCr + nCr-1 = n!/[r!(n-r)!] + n!/[(r-1)!(n-r+1)!] = n!/[(r-1)!(n-r)!]*{1/r + 1/n-r+1} = n!/[(r-1)!(n-r)!]*{[(n-r+1) + r]/[r*(n-r+1)]} = n!/[(r-1)!(n-r)!]*{(n+1)/r*(n-r+1)]} = (n+1)!/[r!(n+1-r)!] = n+1Cr