Question

When you roll two number cubes, what are the odds in simplest form against getting two numbers greater than 3?

A. 4:1

B. 1:4

C. 3:1

D. 1:3
PLEASE ANSWER

Answer 1

Actually... It's A

Explanation:

Odd against is not 1:4, it's most likely 4:1

1:4 is odds in favor, not odds against.

Answer 2

Option B

When you roll two number cubes, the odds in simplest form against getting two numbers greater than 3 is 1 : 4

Solution:

The probability of an event is given as:

`\text {probability of an event }=\frac{\text { number of favorable outcomes }}{\text { total number of possible outcomes }}`

Given that,

Tow number cubes are rolled

To find: Probability of getting two numbers greater than 3

On a number cube there are 6 numbers {1, 2, 3, 4, 5, 6} Out of which 3 numbers are greater than 3 {4, 5, 6}

So, total number of possible outcomes = 6

Favourable outcomes = number greater than 3 = 3

When you roll one number cube, probability of getting number greater than 3:

`\text { Probability (number greater than } 3 \text { ) }=(3)/(6)`

When you roll two number cubes, probabilty is given as:

`\text { Probability (number greater than }3)= (3)/(6) * (3)/(6)=(1)/(2) * (1)/(2) = (1)/(4)`

`Probability = (1)/(4)`

In ratio form we can write as 1 : 4

Option B is correct