## Numbers With Identical Digits## Activities1. With the help of identical digits and the mathematical operation signs obtain 100, 24, 30, 1000. 2. Also try to obtain 16 With Four Five's and 10 with Five Nine's. ## Solution1. 100 With Identical Digits: We can use one's, three's and (most conveniently) five's: 24 With Identical Digits: 8+8+8; 22 + 2 = 24 30 With Identical Digits: 6 x 6 - 6 = 30; 5x5+5; 33 - 3 = 30. 1000 With Identical Digits: 888 + 88 + 8 + 8 + 8 = 1000. 2. There is only one-way: 55/5 + 5 = 16; The two ways to get 10 are: 9 + 99/99 = 10; 99/9 9/9 = 10. *** |