## Your Questions About Odd Calculator

Linda asks…

## to card counters: Does this flash card set look right? Blackjack?

http://www.flashcardmachine.com/blackjack-hilo-basicstrategyanddeviations.html

This set of flash cards is very detailed, would you say it’s correct or do you see errors?

### admin answers:

I don’t need to look at the flash cards to give you my answer.

To play PERFECT Basic Strategy, you need to adjust your strategy to the casino’s rules. In other words, what two cards you double down on are going to be different at casinos where the rule is the Dealer must STAND on soft-17 and the casinos where the rule is the Dealer must HIT soft-17.

Below is the Basic Strategy Calculator from the Wizard of Odds. Near the top, you can enter the specific rules of any specific casino. Notice that every time you change a rule, the listed strategy changes just slightly for certain scenarios.

This guy is the best. (I have absolutely nothing to do with this website, by the way. I only wish I were this smart!) All of his suggestions for Basic Strategy are based on mathematics and millions of simulations of hands.

Figure out the rules for your casino, check your flash cards against the Wizard of Odds‘ strategy charts, and adjust your flash cards accordingly.

***EDIT***

Aw crap. It just occurred to me that you’re looking for deviations based on the count. Well that was a complete waste of time. Sorry! I’ll leave my response just in case you haven’t seen the Wizard of Odds calculator. Sorry again.

Then again, even when considering your specific question regarding deviations from the count, it still would be reliant on the rules of specific casinos.

Susan asks…

## Probability question….?

There is a lottery and 7 numbers are selected out of 33. Numbers between 1 and 33. I can pick 7 numbers, what are the **odd**’s that I hit all 7 correct?

What are the odds to hit 6,5,4,3,2 correct?

thanks alot.

### admin answers:

There is a handy odds calculator at http://www.betstarter.com/lottery/LottoOdds.asp

Just enter 7 and 33 in the two boxes and the following results will be displayed:

7-of-7 = 1 : 4,272,048.0

6-of-7 = 1 : 23,472.8

5-of-7 = 1 : 625.9

4-of-7 = 1 : 46.9

3-of-7 = 1 : 8.2

2-of-7 = 1 : 3.1

1-of-7 = 1 : 2.7

Joseph asks…

## What are the odds of rolling.. on dice?

I’m wondering what the odds of rolling either of these numbers

10-11

12-13

14

96

97-98

99-100

On a 10, 10 sided dice.

Thankyou

It has to be a total of one of those numbers with all 10, 10 sided dice.

I really have no idea how to calculate it, thanks for taking the time to try explain it to me though.

### admin answers:

Edit — nevermind, it’s simpler than what I was talking about. You’re asking about rolling exact numbers.

I’ll just do one of them, since it’s essentially the same problem asked 6 times. So let’s figure out the odds of rolling a sum of 14.

First we need to know how many ways there are to roll it.

A) 9 dice can be 1’s and 1 die can be a 5.

B) 8 dice can be 1’s and 2 dice can be 3’s

c) 8 dice can be 1’s, 1 die can be a 4, 1 die can be a 2

d) 7 dice can be 1’s, 2 dice can be 2’s and 1 die can be a 3.

E) 6 dice can be 1’s and 4 dice can be 2’s.

There are 10 ways for A to happen.

There are 10C2 = 45 ways for B to happen.

There are 10*9 = 90 ways for C

There are 10*(9C2) = 360 ways for D to happen.

There are 10C4 = 210 ways for E to happen.

In total there are 715 ways to roll a 14. There are 10^10 possible rolls.

Probability = 715 / 10^10 = 143 / 2 billion = about 1 in 13,986,014 chance

(Aka, very hard to do!)

The easy way to arrive at 715 is to use this calculator — http://www.btinternet.com/~se16/js/partitions.htm

Select „compositions of“: 14

„Exact number of terms“: 10

„Each term no more than“: 6

You can do the same with any sum, and then divide the answer by 10^10 for the probability. For a „1 in __“ answer, flip the numerator and denominator. I used WolframAlpha calculator: http://www.wolframalpha.com/input/?i=715%2F%2810^10%29

Ruth asks…

## using casio fx-100w calculator?

I’m facing a problem using casio fx-100w… I cannot find the way to do differentiation using my cal… I’ve gone through the user guide too but no clue :-(( please can anyone help me??? it would be much appreciated if you can tell me exactly which keys I have to use… thanxxxx

### admin answers:

I just looked at the manual, and this isn’t a symbolic calculator. The „integration“ it does is a numerical approximation of a definite integral…and you can estimate a derivative manually by computing:

f'(x) ~= [f(x + h) – f(x)] / h

for a given value of x and some small value of h. It looks like that’s the best you’re going to get. It’s odd that they didn’t add that to the firmware, since the integral operation already knows how to input a function definition. A numerical derivative operation could do the same.

Helen asks…

## Determine function is even, odd, or neither (2 problems)…?

Need help on this problem:

A) f(x)= cube root (7x^3 – 3x)

B) f(x)= square root (4x^5 + 7x^3)

Thanks to the people who answer

### admin answers:

If function even

f(-x)=f(x)

has symmetric about the y-axix

if function odd

f(-x)=-f(x)

has point symmetry about the origin(180 degrees)

neither means neither even or odd

A) f(x)= cube root (7x^3 – 3x)

let’s first see if it’s even

sub -x instead of x

f(-x)=cube root (-7x^3 + 3x)

:. F(x) not = f(-x)

:. Not even

let’s see if it is odd

factor out – 1st

-f(x)= cube root (-7x^3 + 3x)

sub -x instead of x

f(-x)=cube root (-7x^3 + 3x)

:.-f(x)=f(-x)

:. It’s an odd function

B) f(x)= square root (4x^5 + 7x^3)

let’s first see if it’s even

sub -x instead of x

f(-x)=square root (-4x^5 – 7x^3)

:.f(x) not=f(-x)

:. Not even function

let’s see if it is odd

factor out – 1st

-f(x)=square root (-4x^5 – 7x^3)

-f(x)=DNE

sub -x instead of x

f(-x)=square root (-4x^5 – 7x^3)

f(-x)=DNE

bc under (1/2) answer can not be –

:.f(x) not=f(-x)

:.not Odd function

:. Neither

By the use of graphmatica or graphing calculator u can verify ur answers

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