
Two unbiased dice are rolled once. What is the probability of getting a sum equal to 7?
Answer
524.7k+ views
Hint: Probability is a measure of the likelihood of an event to occur. It can be mathematically represented as .
Complete step-by-step answer:
Let Dice 1 be D1 and Dice 2 be D2
Now combinations which will result to favourable outcome i.e. Sum of D1 and D2 is 7 will be
So, number of favourable outcome when sum of D1 and D2 are 6
and total number of outcomes will be
So, we know that probability of an event =
So, the probability of sum of two dices to be 7 =
Note: In these types of questions where the number of favourable outcomes are countable draw a sheet of all the possible outcomes and then divide it with the total number of outcomes to get probability of an event.
Complete step-by-step answer:
Let Dice 1 be D1 and Dice 2 be D2
Now combinations which will result to favourable outcome i.e. Sum of D1 and D2 is 7 will be

So, number of favourable outcome when sum of D1 and D2 are 6
and total number of outcomes will be
So, we know that probability of an event =
So, the probability of sum of two dices to be 7 =
Note: In these types of questions where the number of favourable outcomes are countable draw a sheet of all the possible outcomes and then divide it with the total number of outcomes to get probability of an event.
Latest Vedantu courses for you
Grade 8 | CBSE | SCHOOL | English
Vedantu 8 CBSE Pro Course - (2025-26)
School Full course for CBSE students
₹45,300 per year
Recently Updated Pages
Master Class 9 General Knowledge: Engaging Questions & Answers for Success

Master Class 9 English: Engaging Questions & Answers for Success

Master Class 9 Science: Engaging Questions & Answers for Success

Master Class 9 Social Science: Engaging Questions & Answers for Success

Master Class 9 Maths: Engaging Questions & Answers for Success

Class 9 Question and Answer - Your Ultimate Solutions Guide

Trending doubts
State and prove Bernoullis theorem class 11 physics CBSE

Who built the Grand Trunk Road AChandragupta Maurya class 11 social science CBSE

1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

State the laws of reflection of light

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells
