A palindrome is a word or sentence that reads the same backward as it does forward, such as tot, boob, mom, dad, did, non, noon, racecar, deed, level, pip, rotor, civic, pop, madam, eye, nun, radar, toot, and many others. Mathematics, too, has arrangements that could be called palindromes. For example:
21978 x 4 = 87912
10989 x 9 = 98901
There are some complex examples of reversal, mixing addition and multiplication:
9 + 9 = 18 81 = 9 x 9
24 + 3 = 27 72 = 3 x 24
47 + 2 = 49 94 = 2 x 47
497 + 2 = 499 994 = 2 x 497
