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The average of the first four numbers is...

The average of the first four numbers is three times the fifth number. If the average of all the five numbers is 85.8, then the fifth number is:
पहली चार संख्याओं का औसत पाँचवीं संख्या से तीन गुना है | यदि सभी पाँच संख्याओं का औसत 85.8 है, तो पाँचवीं संख्या होगी :

A

33

B

29

C

39

D

34

Text Solution

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The correct Answer is:
A
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The average of first three numbers is double of the fourth number. If the average of all the four numbers is 12, find the 4th number. पहली तीन संख्याओं का औसत, चौथी संख्या का दुगुना है। यदि उन सभी चारों संख्याओं का ओसत 12 हो, तो चौथी संख्या ज्ञात कीजिए।

The average of 9 numbers is 40. If the average of the first five numbers is 38 and the average of the last five numbers is 50, then what is the fifth number? 9 संख्याओं का औसत 40 है | यदि पहली पांच संख्याओं का औसत 38 है तथा अंतिम पांच संख्याओं का औसत 50 है, तो पाँचवीं संख्या कौन सी है?

Given four different numbers, the average of first three numbers is four times the fourth number and the average of all the four numbers is 52. What is the average of the first three number? चार अलग-अलग संख्याएँ दी गयी हैं, पहली तीन संख्याओं का औसत चौथी संख्या से चार गुना है तथा सभी चार संख्याओं का औसत 52 है | पहली तीन संख्याओं का औसत क्या है?

Four different numbers are given here. The average of the first three numbers is four times to the fourth number and the average of all four numbers is 87.75. What is the average of the first three numbers ? यहाँ चार अलग-अलग संख्याएँ दी गई हैं | पहली तीन संख्याओं का औसत चौथी संख्या का चार गुणा है और सभी चार संख्याओं का औसत 87.75 है | पहली तीन संख्याओं का औसत कितना है ?

Out of 6 numbers, the sum of the first 5 numbers is 7 times the 6th number. If their average is 136, then the 6th number is: 6 संख्याओं में से, पहली 5 संख्याओं का जोड़ छठी संख्या से 7 गुना है | यदि उनका औसत 136 है, तो छठी संख्या कौन सी है ?

The average of twelve numbers is 42. The average of the last five numbers is 40 and that of the first four numbers is 44. The 6th number is 6 less than the fifth and 5 less than the 7th number. The average of the 5th and the 7th numbers is: बारह संख्याओं का औसत 42 है | अंतिम पांच संख्याओं का औसत 40 तथा पहली चार संख्याओं का औसत 44 है | छठी संख्या पाँचवीं से 6 कम है तथा 7वीं संख्या से 5 कम है | 5वीं और 7वीं संख्या का औसत है :

The average of four numbers is 20. If the average of the first two numbers is 15, then what is the average of the last two numbers? चार संख्याओं का औसत 20 है | यदि पहली दो संख्याओं का औसत 15 है, तो अंतिम दो संख्याओं का औसत ज्ञात करें |

Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number is 21 then the first number is: चार संख्याओं में से पहली तीन संख्याओं का औसत 16 है और अंतिम तीन संख्याओं का औसत 15 है | यदि अंतिम संख्या 21 है, तो पहली संख्या है :

Four different positive numbers are written in ascending order. One-third of the average of all the four numbers is 19 less than the greatest of these numbers. If the average of the first three numbers is 12, the greatest number among the given numbers is: चार अलग-अलग धनात्मक संख्याओं को आरोही क्रम में लिखा गया है | सभी चार संख्याओं की औसत का एक-तिहाई इनमें से सबसे बड़ी संख्या से 19 कम है | यदि पहली तीन संख्याओं का औसत 12 है, तो इनमें से सबसे बड़ी संख्या ज्ञात करें |

GAGAN PRATAP -AVERAGE-Multiple Choice Questions
  1. The average of the age of Sonu, Hari and Govind is 30 years. If their ...

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  2. Out of 6 numbers, the sum of the first 5 numbers is 7 times the 6th nu...

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  3. The average of the first four numbers is three times the fifth number....

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  4. The average of five positive numbers is 56. If the first number is thr...

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  5. The side of a square exceeds the side of another square by 4cm and the...

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  6. Of the three numbers, the average of the first and the second is great...

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  7. The average of a non-zero number, its square and its cube is 127 times...

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  8. The average of x, y and z is 45. x is as much more than the average as...

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  9. Out of four numbers the average of the first three is 26 and that of t...

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  10. A student finds the average of ten 2-digits numbers. While copying num...

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  11. In a class of 180 students, 45% are girls and the remaining are boys. ...

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  12. In a class of 60 students, 40% are girls. The average weight of the wh...

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  13. The average height of 5 boys is 175 cm. A sixth boy joined the group a...

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  14. The weight of 9 members out of 22 are measured consecutively and their...

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  15. A library lias an average of 265 visitors on Sundays and 130 visitors ...

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  16. In a class of 80 students, 60% participate in games and the rest do no...

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  17. The average score in Mathematics of 90 students of section A and B of ...

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  18. Given that the mean of five numbers is 28. If one of them is excluded ...

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  19. The average weight of 8 persons is increased by 2.5 kg. When one of th...

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  20. The average age of 25 men is 28 years. 5 new men of an average age of ...

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