Sol.Clearly,the unit,s digit of 913o525 is 5,which is not divisible by 2.
So,9130525 is not disivible by 2.
Each of the numbers has a unit digit disivible by 2.
So, each one other than 9130525 is disivible by 2.

Sol.(i) Sum of digit in 541326 is 21,which is divisible by 3.
So,541326 is divisible by 3.
  (ii) Sum of digits in 5967013 is 31,which is not divisible by 3.
  Hence,5967013 is not divisible  by 3.

Sol.(i) Sum of digits in 19725462 is 36,which is divisible by 9.
        So,the given number is divisible by 9.
(ii)Sum of digits in 36870521 is 32, which is not divisible by 9.
      So,the given is not divisible by 9.

Sol.(i) The number formed by the last 2 digits in the given number is 94,
which is not divisible by 4.
 :. 67920594 is not divisible by 4.

(ii) The number formed by the last 2 digits in the given number is 72,which is divisible by 4.
:. 618703572 is divisible by 4.

Sol.(i) The number formed by the last 3 digits of the given number is 542.
 which is not divisible by 8.
:. 98016542 is not divisible by 8.

(ii)The number formed by the last 3 digits of the given number is
 304, which is divisible by 8.
:. 106598304 is divisible by 8.