You have 5 numbers
1, 9, 3, 5, and 7
you need to arrange these number like
Rules
create 2 pairs from numbers above keep one of the number in the middle then apply this law
1st pair * last pair - middle number
. after arranging and applying the above rules the result should be a number where whose all digits are same.
example if I arrange it like below
79(1st-pair) 5(middle) 31(2nd-pair)
79 * 31 - 5 = 2444 (1st pair * last pair - middle number)
it should be 4444 instead of 2444 ( it can be a right solution if instead of 2444 I get 4444)