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In a class, the average score of thirty students on a test is 69. Later on it was found that the score of one student was wrongly read as 88 instead of 58. The actual average score is:
एक कक्षा में, किसी परीक्षा में तीस छात्रों का औसत अंक 69 है | बाद में, यह पाया गया कि एक छात्र का अंक गलती से 58 के बजाय 88 दर्ज कर लिया गया था | वास्तविक औसत अंक कितना है ?

A

88

B

68

C

58

D

69

Text Solution

Verified by Experts

The correct Answer is:
B
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The average marks of 18 students in an examination was 60. It was later found that the marks of one student had been wrongly entered as 63 instead of 36. The correct average is: किसी परीक्षा में 18 छात्रों के अंको का औसत 50 था। बाद में यह पाया गया कि किसी छात्र के अंक 36 के बजाय 63 लिखे गए थे। सही ओसत ___ होगा।

Average score of 50 students in a class is 44. Later on it was found that the score 23 was incorrectly recorded as 73 . The correct average score is

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Average marks of 100 students of a class is 58. Later it was found that 86 was mistakenly written as 68. Find the actual average.

The average marks of 40 students in an English exam is 72. Later it is found that three marks 64, 62 and 84 were wrongly entered as 68, 65 and 73. The average after mistakes were rectified is अंग्रेजी के परीक्षा में 40 छात्रों का औसत अंक 72 है। बाद में पता चला है कि तीन अंक 64, 62 और 84 गलती से 68, 65 और 73 लिख दिए गए थे। गलतियाँ सुधारने के बाद औसत है-

In an examination, the average score of students in a class who passed is 69 and that of who failed is 61. If the average score of all the students, who appeared in the examination is 66, then the percentage of students who passed is: एक परीक्षा में, किसी कक्षा में पास करने वाले छात्रों का औसत अंक 69 है तथा फेल करने वाले छात्रों का औसत अंक 61 है | यदि परीक्षा में शामिल होने वाले सभी छात्रों का औसत अंक 66 है, तो पास करने वाले छात्रों का प्रतिशत ज्ञात करें |

The average marks obtained by a student in 9 subjects is 98. On subsequent verification it was found that the marks obtained by him in a subject was wrongly copied as 86 instead of 68. The correct average of the marks obtained by him is: एक छात्र द्वारा 9 विषयों में प्राप्त औसत अंक 98 है | फिर से जांच करने पर यह पाया गया कि उसके द्वारा एक विषय में प्राप्त किये गए अंक 68 के बजाय 86 लिखे गए थे | उसके द्वारा प्राप्त अंकों का सही औसत है :

GAGAN PRATAP -AVERAGE-Multiple Choice Questions
  1. The average of 33 numbers is 74. The average of the first 17 numbers i...

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  2. The average marks of 50 students in an examination was 65. It was late...

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  3. In a class, the average score of thirty students on a test is 69. Late...

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  4. The average marks of 40 students was found to be 68. If the marks of t...

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  5. The average of 100 numbers is 63, but it was found that 2 numbers 37 &...

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  6. The average age of a number of persons in a group’ was calculated as 3...

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  7. The average of the ages of a group of 65 men is 32 years. If 5 men...

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  8. The average of 18 numbers is 37.5. If six numbers of average x are add...

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  9. The average weight of some students in a class was 58.4kg. When 5 stud...

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  10. The average weight of the students in a group 75.4 kg. Later on, four ...

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  11. The average weight of a certain number of students in a group is 72 kg...

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  12. While tabulation of marks scored in an examination by the students of ...

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  13. The average of n observations is 40. If one observation of value 80 is...

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  14. The average age of 24 students is 15.5 years. The age of the teacher i...

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  15. Three numbers are such that if the average of any two of them is added...

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  16. The average of eleven numbers is 68. The average of the first four num...

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  17. The average of thirteen numbers is 80. The average of the first five n...

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  18. The average of 24 numbers is 56. The average of the first 10 numbers i...

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  19. The average marks of 30 boys is 88, and when the top scores were exclu...

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  20. A batsman scores 92 runs in his 15th innings, which increases his batt...

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