Class 10 Exam  >  Class 10 Questions  >  The mean of 9 observations is 36. If the mean... Start Learning for Free
The mean of 9 observations is 36. If the mean of the first 5 observations is 32 and that of the last 5 observations is 39, then the fifth observation is _____.
  • a)
    28
  • b)
    31
  • c)
    43
  • d)
    37
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The mean of 9 observations is 36. If the mean of the first 5 observati...
36 x 9 = x1 + x2 + x3 + . . . + x9 ... (i)
5 x 32 = x1 + x2 + x3 + x4 + x5 ,..(ii)
5 x 39 = x5 + x6 + x7 + x8 + x9 ...(iii)
Adding (ii) and (iii),
we get 355 = x 1 + x2 + x 3 + x4 + x 5 + ... + x9 + X5
Using (i), we get 355 - 36 x 9 = x5 
x5 = 31
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
Explore Courses for Class 10 exam

Top Courses for Class 10

The mean of 9 observations is 36. If the mean of the first 5 observations is 32 and that of the last 5 observations is 39, then the fifth observation is _____.a)28b)31c)43d)37Correct answer is option 'B'. Can you explain this answer?
Question Description
The mean of 9 observations is 36. If the mean of the first 5 observations is 32 and that of the last 5 observations is 39, then the fifth observation is _____.a)28b)31c)43d)37Correct answer is option 'B'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about The mean of 9 observations is 36. If the mean of the first 5 observations is 32 and that of the last 5 observations is 39, then the fifth observation is _____.a)28b)31c)43d)37Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The mean of 9 observations is 36. If the mean of the first 5 observations is 32 and that of the last 5 observations is 39, then the fifth observation is _____.a)28b)31c)43d)37Correct answer is option 'B'. Can you explain this answer?.
Solutions for The mean of 9 observations is 36. If the mean of the first 5 observations is 32 and that of the last 5 observations is 39, then the fifth observation is _____.a)28b)31c)43d)37Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of The mean of 9 observations is 36. If the mean of the first 5 observations is 32 and that of the last 5 observations is 39, then the fifth observation is _____.a)28b)31c)43d)37Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The mean of 9 observations is 36. If the mean of the first 5 observations is 32 and that of the last 5 observations is 39, then the fifth observation is _____.a)28b)31c)43d)37Correct answer is option 'B'. Can you explain this answer?, a detailed solution for The mean of 9 observations is 36. If the mean of the first 5 observations is 32 and that of the last 5 observations is 39, then the fifth observation is _____.a)28b)31c)43d)37Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of The mean of 9 observations is 36. If the mean of the first 5 observations is 32 and that of the last 5 observations is 39, then the fifth observation is _____.a)28b)31c)43d)37Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The mean of 9 observations is 36. If the mean of the first 5 observations is 32 and that of the last 5 observations is 39, then the fifth observation is _____.a)28b)31c)43d)37Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 10 tests.
Explore Courses for Class 10 exam

Top Courses for Class 10

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev