In integers, there are a number of symmetric numbers, such as 779395115, which are called palindromes

In integers, there are a number of symmetric numbers, such as 779395115, which are called palindromes

74 + 47 = 121 let me write: 13 + 31 = 44
2.21 * 12 = 252 let me write: 11 * 11 = 121
3.68+86=154
154 + 451 = 605, 605 + 506 = 1111, 1111 + 1111 = 2222
5.605+506=1111