GM - The question says: "There's a mystery 5-figure number which, when multiplied both by 7 and by any single-digit number, always produces an answer where every digit is the same as that single-digit number. What's that mystery 5-figure number?" Taking 4 as an example for the single-digit number, that means that 28 (= 7 x 4) times the mystery number must come...
17:14 Fri 05th Dec 2014