Question

Find the sum of palindromic numbers between 100 and 122.

Answer 1

Palindromes between 100 and 122 = 101, 111, 121

Sum = 101 + 111 + 121
= (100 + 1) + (100 + 10 + 1) + (100 + 20 + 1)
= (100 + 100 + 100) + (10 + 20) + (1 + 1 + 1)
= 300 + 30 + 3
= 333

Therefore, the sum of palindromic numbers between 100 and 122 is 333.