Question

Will give brainliest please explain in simple terms

Answer 1

Answer:

25

Step-by-step explanation:

Hello, please consider the following.

$\text{Let's note the 7 digits } x_i \text{ for }i = 0,1,2,3,4,5,6\\\\\text{We can write 7 equations as below.}\\\\(1) \ x_0+x_1+x_2+x_3=16\\\\(2) \ x_1+x_2+x_3+x_4=16\\\\(3) \ x_2+x_3+x_4+x_5=16\\\\(4) \ x_3+x_4+x_5+x_6=16\\\\(5) \ x_0+x_1+x_2+x_3+x_4=19\\\\(6) \ x_1+x_2+x_3+x_4+x_5=19\\\\(7) \ x_2+x_3+x_4+x_5+x_6=19$

This is the translation in mathematical equations.

(5)-(1) gives $x_4=19-16=3$

(6)-(2) gives $x_5=19-16=3$

(7)-(3) gives $x_6=19-16=3$

So, by using (1)

$x_0+x_1+x_2+x_3+x_4+x_5+x_6=(x_0+x_1+x_2+x_3)+3+3+3=16+9=25$

Thank you

PS: If we go a little bit further it is not so hard to find that the number actually is 3337333