The average of 15 numbers is 18. The average of the first 8 is 19 and the average of the last 8 is 17, then what is the 8th number? ,

The average of 15 numbers is 18. The average of first 8 is 19 and that last 8 is 17, then the 8th number is

The average of 21 numbers is 12. The average of the first 11 numbers is 9 and the average of the last 11 numbers is 15. What is the value of the middle number ?

The average of 20 numbers is 15 and the average of first five is 12.The average of the rest is

The average of three numbers is 6. The average of the first two is 5 while the average of the last two is 8. The three numbers are:

lf the average of 35 numbers is 22, the average of the first 17 numbers is 19. and the average of the last 17 numbers is 20, then the 18^th number is:

The average of 9 numbers is 18. If the average of first five numbers is 19 and the average of last 5 numbers is 17, find the 5th number.

The average of 11 numbers is 10.8. If the average of the first six be 10.4 and that of the last six is 11.5, then the middle (6th) number is

The average of 18 numbers is 52. The average of first 8 numbers is 62 and the average of the next 7 numbers is 45. If the 16th number is 6 less than the 17th number and the 17th number is one more than the 18th number then what is the average of 16th and 18th number? 18 संख्याओं का औसत 52 है | पहली 8 संख्याओं का औसत 62 तथा अगली 7 संख्याओं का औसत 45 है | यदि 16वीं संख्या 17वीं संख्या से 6 कम है तथा 17वीं संख्या 18वीं संख्या से एक अधिक है, तो 16वीं और 18वीं संख्या का औसत ज्ञात करें |