Question

the average of seven consecutive number is 54.what is the difference between the product of digits(within the number) of the first and last number​

Answer 1

Step-by-step explanation:

let the first number be X

second number= X+1

third number= X+2

forth number= X+3

fifth number = X+4

sixth number = X+5

seventh number = X+6

now sum of these numbers =

X+X+1 + X+2 +X+3 +X+4 +X+5 +X+6 = 7x+ 21

average = (7x+21) /7 = 54

X+3 = 54

X = 54-3=51

so first number = 51

last number = 51+6 = 57

their product is = 51*57=2907