Two dice are thrown together the probability of getting the same number on both the dice

Solution:

Given, two dice are thrown at the same time.

We have to find the probability of getting a different number on both dice.

When 2 dice are thrown at the same time, the overall possible outcomes are

(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)

(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)

(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)

(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)

(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)

(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)

Total number of possible outcomes = 36

The possibility of getting different number is 

{(1,2) (1,3) (1,4) (1,5) (1,6)

(2,1) (2,3) (2,4) (2,5) (2,6)

(3,1) (3,2) (3,4) (3,5) (3,6)

(4,1) (4,2) (4,3) (4,5) (4,6)

(5,1) (5,2) (5,3) (5,4) (5,6)

(6,1) (6,2) (6,3) (6,4) (6,5)}

Number of favourable outcomes = 30

Number of possible outcome = 36

Probability = number of favourable outcomes / number of possible outcomes

Probability of getting different number = 30/36

= 10/12

= 5/6

Therefore, the probability of getting a different number is 5/6.

✦ Try This: Three dice are thrown at the same time. Find the probability of getting the same number on all dice.

☛ Also Check: NCERT Solutions for Class 10 Maths Chapter 14


NCERT Exemplar Class 10 Maths Exercise 13.3 Problem 19(ii)

Two dice are thrown at the same time. Find the probability of getting different numbers on both dice

Summary:

Two dice are thrown at the same time. The probability of getting different numbers on both dice is 5/6


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Two dice are thrown simultaneously. What is the probability of getting the same number on both the dice?

  1. 1/6
  2. 1/4
  3. 1/3
  4. 1/9

Answer (Detailed Solution Below)

Option 1 : 1/6

Free

150 Questions 150 Marks 150 Mins

Given:

Two dice are thrown simultaneously

Calculation:

When two dice are thrown simultaneously,

Number of possible outcomes are 36.

If getting the same number on both dice is taken as event,

Then for the 1st event, 

⇒ Number of outcomes are 6.

For 2nd event,

⇒ Number of outcomes/total number of possible outcomes

⇒ 6/(6 × 6)

⇒ 1/6

 The probability of getting the same number of both the dice is 1/6.

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Total number of outcomes = 36.

Getting the same number on both the dice means (1, 1), (2, 2), (3, 3), (4, 4), (5, 5) and (6, 6).

Numbers of favourable outcomes = 6.

∴ P(getting the same number on both dice) =`("Number of favourable outcomes")/"Number of all possible outcomes"`

=`6/36 = 1/6`

Thus, the probability of getting the same number on both dice is `1/6`.

Hence, the correct answer is option `1/6`.

Two dice are thrown together. The probability of getting the same number on both dice is

  • \[\frac{1}{2}\]

  • \[\frac{1}{3}\]

  • \[\frac{1}{6}\]

  • \[\frac{1}{12}\]

When two dice are thrown together, all possible outcomes are
(1, 1), (1, 2), (1, 3), (1, 4), (1, 5), (1, 6)
(2, 1), (2, 2), (2, 3), (2, 4), (2, 5), (2, 6)
(3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (3, 6)
(4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (4, 6)
(5, 1), (5, 2), (5, 3), (5, 4), (5, 5), (5, 6)
(6, 1), (6, 2), (6, 3), (6, 4), (6, 5), (6, 6)
∴ Total number of outcomes = 36
The favourable outcomes are (1, 1), (2, 2), (3, 3), (4, 4), (5, 5) and (6, 6).
So, the number of favourable outcomes are 6.
∴ P(getting the same number on both dice) = \[\frac{\text{ Favourable number of outcomes }}{\text{ Total number of outcomes }} = \frac{6}{36} = \frac{1}{6}\]

When rolling two dice What is the probability of getting the same number on both dice doubles )?

So we have 36 outcomes, and if you simplify this, 6/36 is the same thing as 1/6. So the probability of rolling doubles on two six-sided dice numbered from 1 to 6 is 1/6.

When two dice are thrown find the probability of getting same numbers on both dice * 1 point 2 3 1 6 1 12 1?

` P(getting the same number on both dice) =`6/36 = 1/6`.

When two dice are thrown the probability of getting unequal numbers in both is?

Given, two dice are thrown at the same time. We have to find the probability of getting a different number on both dice. Therefore, the probability of getting a different number is 5/6.