Question

110V
sible Check the divisioNLY UIT
(a)) 3784
(b) 15350 (c) 38442 d 103081 (e) 769483
attor Replace (by the smallest digit so that:
(a) 439*7 is divisible by 9
(b) 75* is divisible by 4
(c) 2*345 is divisible by 11
(d) 8*36 is divisible by 8
* by a digit to make the number divisible by 9​

Answer 1

Step-by-step explanation:

full solution: denote the missing digit by d . Then

2d345===2×10,000+d×1,000+3×100+4×10+5(2×(9,999+1)+d×(999+1)+3×(99+1)+4×(9+1)+5(2×9,999+d×999+3×99+4×9)+(2+d+3+4