Probability

That depends on how many sides the cube has but if it was a 6 sided cube then the probability of getting a four is 1 to 6 and even is 3 to 6.

Since 4 is even, then the result set of 4 intersect with the result set of even, so the probability of rolling a 4 or an even number is 1 in 2, or 0.5.

There are 13 clubs (including the seven of clubs), and 3 other sevens (from the other suits). So that makes 16 cards that are clubs or sevens. Thus, the probability of drawing a club or a seven from a standard 52 card deck is 16/52 = 4/13 (about 31%).

Yes.

1. He takes 6 steps forward and 5 steps backward

2. He takes 5 steps forward and 6 steps backward

consider 1:

p1 = (11C6)(0.4)^6*(0.6)^5

for 2:

p2 = 11C5(0.4)^5*(0.6)^6

total probability = p1 + p2

There are twenty odd cards in a deck of cards. This is a math problem.

Roughly speaking, one in 49000 chances.

- Bdx

50%

Correct.

13 of each suit

The probability of getting a head or a tail is, for all practical purposes, equal to 1. The only other possibility is that the coin stands on its edge - technically possible but so very unlikely that it can safely be ignored.

24 ways.

34.1% with the normal distribution.

The theoretical probability is 1. Lots of people have done it in the course of their lives so it is an event that has happened and will happen again.

41 (13 + 13 + 13 + 2)

The answer depends, among other factors, on what your occupation is and where in the world you live. For most people, the probability is negligible.

50%

I was told by my doctor, that the chances of having multiples is very likely once you've conceived multiples in the past. And if you have multiples, they will skip a generation and then their kids will likely have multiples. Pretty cool.

Ancient Olympic Games were extended from a one day festival with a few events to a five day event with wrestling, boxing, horse racing, jumping, javelin, and chariot racing.

one in 100 or 10in a 1000

its 50/50

You want: P(even) * P(even) * P(even) * P(even). P(even) = 3/6 or 1/2. Therefore probability even on 4 rolls is: 1/2 * 1/2 * 1/2 * 1/2 = 1/16 = 0.0625.

The probability is 7/36.

Possible outcomes of rolling a die 5 times = 6^5

Number of outcomes including rolling exactly one 2: 5^5 (5*5^4)

5^5/6^5 = 3125/7776 ~= 0.4019

If a number has a probability of 1 it means it is certain to occur.

1/7