Greatest five-digit positive integer which when divided by 8, 9 and 10 leaves 3 as remainder
Subtract 3 from the answer choices and then lets check the answer choices
(A) 99,996 - 3 = 99,993
(B) 99,983 - 3 = 99,980
(C) 99,723 - 3 = 99,720
(D) 99,623 - 3 = 99,620
(E) 99,523 - 3 = 99,520
Now, above numbers should be divisible by 8, 9 , 10
(A) 99,993
NOT Divisible by 10 => ELIMINATE
(B) 99,980
Sum of digits = 9 + 9 + 9 + 8 + 0 = 35 => NOT Divisible by 9 => ELIMINATE
(C) 99,720
Last three digits = 720 => Divisible by 8
Sum of digits = 9 + 9 + 7 + 2 + 0 = 27 => Divisible by 9
Last digit = 0 => Divisible by 10
=> This is the number, we don't need to check further but I am solving to complete the solution.
(D) 99,620
Sum of digits = 9 + 9 + 6 + 2 + 0 = 26 => NOT Divisible by 9 => ELIMINATE
(E) 99,520
Sum of digits = 9 + 9 + 5 + 2 + 0 = 25 => NOT Divisible by 9 => ELIMINATE
So. Answer will be C
Hope it helps!
Watch the following video to MASTER Divisibility Rules