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Find the average of all the numbers bet...

Find the average of all the numbers between 3 and 42 which are divisible by 7

A

18

B

21

C

24

D

30

Text Solution

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The correct Answer is:
B
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S CHAND IIT JEE FOUNDATION-AVERAGE -QUESTION BANK -16
  1. The average of the first five odd prime numbers is

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  2. Find the average of all the numbers between 3 and 42 which are divis...

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  3. A,B,C,D,E are consecutive even numbers . The average of these five nu...

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  4. If 37 a + 37 b =5661 , what is the average of a and b ?

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  5. A student got 85,87,91,82, 90 and x marks in all his subjects. His ave...

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  6. The average of 2, 7, 6 and x is 5 and the average of 18, 1, 6, x...

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  7. If x(1),x(2),x(3),x(4),x(5) are five consecutive odd numbers then th...

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  8. The average of eight numbers is 38 . 4 and the average of seven of ...

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  9. The average age of 24 boys and a teacher is 15. When the teacher's a...

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  10. If the average weight of 6 students is 50 kg , that of 2 students is ...

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  11. The sum of five numbers is 555 . The average of first two numbers is ...

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  12. The average of 20 numbers is 12 . The average of the first 12 number...

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  13. The average of a 6 observations is 45.5. If one new observation is ...

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  14. The average age of 3 friends is 23 .Even if the age of the 4th frie...

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  15. In a joint family , the average age of grandparents is 67 years , th...

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  16. For a week , the average daily rainfall was 0.25 cm. There was no r...

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  17. The average of n numbers is x . When 36 is subtracted from two of t...

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  18. Of the four numbers whose average is 60 , the first is (1)/(4) th ...

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  19. Four years ago the average age of A ,B and C was 25 years .Five yea...

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  20. Out of three numbers , the first is twice the second and is half of t...

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