The average of 8 numbers is 25, that of the first 2 is 20 and of the next three is 26. The sixth number is less than the seventh by 4, and less than the eighth by 6. The last number is  Choose the most appropriate option
A) 30
B) 32
C) 40
D) 36
E) 38
Explanation :   Sum of all the numbers = 25*8= 
<gadget id="calculator">25*8</gadget>
<output>200</output>
200   Sum of first two numbers= 40   Sum of next three numbers(i.e., 3rd, 4th and 5th) = 78   So, sum of first five numbers = 118 and sum of 6th, 7th and 8th number = 82   Assuming sixth number to be x, we get 7th number = x+4 and 8th number = x+6.   So, x + (x+4) + (x+6) = 82   =&gt; x = 24.   Hence, last number(8th number) = 30.   30nswer : 30
<result>A</result>
The average of 8 numbers is 25, that of the first 2 is 20 and of the next three is 26. The sixth number is less than the seventh by 4, and less than the eighth by 6. The last number is