
The fewest answered correctly to get 70 on the 25 question test,
would be the lowest multiple of 4, above 70, divided by 4.
72 รท 4
= 18 is the fewest number that he could have answered correctly
The largest number that he could have left blank goes along with what is above.
If he answered 18 correctly and scored a 70, that would mean that he had one incorrect answer, which he loses two points.
Therefore, he had 18 correct, 1 incorrect, with 6 left blank (counting for zero)
6 is the largest number left blank
*McGenius*
