With card games like poker, the order of the cards does not matter. Getting a 5 card draw of 1,2,7,9,K is the same as K,7,9,1,2. What matters is the basic overall group.
Because order doesn't matter, we use a combination (instead of a permutation)
We'll use the nCr combination formula which is
n C r = (n!)/(r!*(n-r)!)
and plug in n = 52 and r = 5
So we get:
n C r = (n!)/(r!*(n-r)!)
52 C 5 = (52!)/(5!*(52-5)!)
52 C 5 = (52!)/((52-5)!*5!)
Answer is choice C
Answer:
4x-111
Step-by-step explanation:
let 'my number' be 'x'
x-15 -> (subtract from x)
4(x-15) -> (multiply result from (x-15) by 4)
4(x-15) - 51 -> (subtract 51 from result from [4(x-15)])
4x-60-51
4x-111
This is the expression for the number
There are 360 degrees. So add the 2 angles you have: 95+45=140. Subtract that from the number of degrees: 360-140=220. X=220 :)
Answer:
32
Step-by-step explanation:
increases by multiple of 4
8x4 =32
Answer:
5(x-4)
Step-by-step explanation: