Wednesday

April 1, 2015

April 1, 2015

Posted by **katie** on Tuesday, September 12, 2006 at 4:43pm.

It's actually 6 choose 2 objects

The definition of nCr or n choose r is

(1) n!/(r!(n-r)!)

Here n=6 and r=2 so we have 6!/(2!*(6-2)!)= (6*5*4!)/(2!*4!)= 6*5/2! = 3*5=15

The formula (1) is what you should remember here.

25

**Answer this Question**

**Related Questions**

Math - Hi,I need to know how to do question like this without using a calculator...

Trigonometry - LONESTAR - Simplifying steps without using the calculator for: ...

Math - Solve. |3w-1| = |3w| or abs(3w-1) - abs(3w) I know you can use a ...

Math - If I have 4 people and I want to take a picture of them standing side by ...

math - A calculator requires a keystroke assembly and a logic circuit. Assume ...

math - A calculator requires a keystroke assembly and a logic circuit. Assume ...

math - solve for x without using a calculator 5^(x+1) = 25 i know that x would ...

Algebra - I am using a TI-83 calculator to find all the solutions to the ...

Pre Calculus 12 - Laws of Logarithms Evaluate: without using a calculator, ...

AP Calc (Limits on Piecewise Functions) - I'm trying to find the left, right, ...