Question

The average of 7 consecutive odd numbers is 71 what it difference between the last number and the middle number​

Answer 1

Answer:

let first odd no. be n

consecutive

odd no. are

n,n+2,n+4,n+6,n+8,n+10,n+12

their sum is 71 given

so n+n+2+n+4+n+6+n+8+n+10+n+12 = 71

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7

7n +42 =71x7

7(n+6)=71×7

n+6 = 71x7÷7

n + 6=71

n =65

now yo can do and add last n+12=77

and middle n+6=71