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प्रश्न
The mean of 5, 9, x, 17 and 21 is 13, then find the value of x
पर्याय
9
13
17
21
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उत्तर
13
Explanation;
Hint:
Mean = `(5 + 9 + x + 17 + 21)/5`
13 = `(52 + x)/5`
65 = 52 + x
x = 65 – 52
= 13
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संबंधित प्रश्न
Following table shows the points of each player scored in four games:
| Player | Game 1 | Game 2 | Game 3 | Game 4 |
| A | 14 | 16 | 10 | 10 |
| B | 0 | 8 | 6 | 4 |
| C | 8 | 11 | Did not play | 13 |
Now answer the following questions:
- Find the mean to determine A’s average number of points scored per game.
- To find the mean number of points per game for C, would you divide the total points by 3 or by 4? Why?
- B played in all the four games. How would you find the mean?
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