It is not, so the question is misguided.
800
780
800
800
781
798
It is not, so the question is misguided.
800
No because 250 yards = 750 feet which is less than 800 feet
It is 780+20 = 800
780 rounds to 800.
780
780
The number must be in the range of 781 to 799. To have 8 more tens than ones, the number must have a tens digit of 8 and a ones digit of 0. Therefore, the number is 780.
both 27 and 28 when squared will work
800