GMAT Question > One dice is picked out of two unique dices an...
Related Test
One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?
- a)4
- b)5
- c)6
- d)9
- e)18
Correct answer is option 'B'. Can you explain this answer?
Answers
Approach
Step 1: Read the question carefully & understand the objective
The objective of the question is to find the number of ways in which a person can get a prime number on the first dice OR a composite number on second dice.
There is not much information provided to us in the question itself. However, we can deduce a few things:
- One of the two dices is rolled.
- If a die is rolled there are three possible outcomes in the form of prime numbers i.e. 2, 3, and 5.
- Similarly, there are 2 possible outcomes (4 and 6) in the form of composite numbers.
So, let’s move on to the next step in which we’ll write the objective equation.
Step 2: Write the objective equation enlisting all the tasks
Achievement of the objective involves two tasks:
Task 1: Getting a prime number on the first dice
Task 2: Getting a composite number on the second dice
Since the objective statement contains the word 'OR' between the two tasks, we will put an addition sign between the two tasks. The objective equation will therefore be:
(Number of ways to achieve the objective) = (Number of ways to get a prime number on the first dice) + (Number of ways to get a composite number on the second dice)
Step 3: Determine the number of ways of doing each task
Now that we have the objective equation, let’s move on to the next step to find the number of ways in which these tasks can be completed.
- Task 1 - Getting a prime number on the first dice
There are three prime numbers in the numbers from 1 to 6.
Thus, there are 3 ways to do Task 1.
- Task 2 -Getting a composite number on the second dice
There are total 2 composite numbers in the range 1-6.
So, there are 2 ways to do Task 4.
Step 4: Calculate the final answer
(Number of ways to achieve the objective) = 3 + 2 = 5
So, there are 5 different ways in which a person can get a prime number on the first dice or a composite number on the second dice.
 | View courses related to this question | Explore GMAT courses |
Explore GMAT courses View courses related to this question |  |
| 1 Crore+ students have signed up on EduRev. Have you? |
Similar GMAT Doubts
Question Description
One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer? for GMAT 2023 is part of GMAT preparation. The Question and answers have been prepared according to the GMAT exam syllabus. Information about One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for GMAT 2023 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer?.
One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer? for GMAT 2023 is part of GMAT preparation. The Question and answers have been prepared according to the GMAT exam syllabus. Information about One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for GMAT 2023 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer?.
Solutions for One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for GMAT.
Download more important topics, notes, lectures and mock test series for GMAT Exam by signing up for free.
Here you can find the meaning of One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer?, a detailed solution for One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice One dice is picked out of two unique dices and rolled. In how many ways can a person get either a prime number on the first dice or a composite number on the second dice?a)4b)5c)6d)9e)18Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice GMAT tests.
Top Courses for GMAT
Download free EduRev App
Track your progress, build streaks, highlight & save important lessons and more!
(Scan QR code)
|
|
ApproachStep 1: Read the question carefully understand the objectiveThe objective of the question is to find the number of ways in which a person can get a prime number on the first dice OR a composite number on second dice. There is not much information provided to us in the question itself. However, we can deduce a few things: One of the two dices is rolled. If a die is rolled there are three possible outcomes in the form of prime numbers i.e. 2, 3, and 5. Similarly, there are 2 possible outcomes (4 and 6) in the form of composite numbers.So, lets move on to the next step in which well write the objective equation.Step 2: Write the objective equation enlisting all the tasks Achievement of the objective involves two tasks:Task 1: Getting a prime number on the first diceTask 2: Getting a composite number on the second diceSince the objective statement contains the word OR between the two tasks, we will put an addition sign between the two tasks. The objective equation will therefore be:(Number of ways to achieve the objective) = (Number of ways to get a prime number on the first dice) + (Number of ways to get a composite number on the second dice)Step 3: Determine the number of ways of doing each task Now that we have the objective equation, lets move on to the next step to find the number of ways in which these tasks can be completed. Task 1 -Getting a prime number on the first diceThere are three prime numbers in the numbers from 1 to 6.Thus, there are 3 ways to do Task 1. Task 2 -Getting a composite number on the second diceThere are total 2 composite numbers in the range 1-6.So, there are 2 ways to do Task 4.Step 4: Calculate the final answer(Number of ways to achieve the objective) = 3 + 2 = 5So, there are 5 different ways in which a person can get a prime number on the first dice or a composite number on the second dice.
|
© EduRev
|
Education Revolution
|
Follow Us
|
