Question

Alex has 12 cards having consecutive odd number on them. His friend asked him to add all the numbers and convert that number into a special palindrome number. Find the number Alex has to form.
( 3 marks )

Answer 1

Solution:
We know that the sum of cusecutive odd numbers is the number multiplied by itself. (1 mark)
Sum of 12 consecutive odd numbers = 12 times 12 = 144 (0.5 marks)
Turn it back to front.​ = 441 (0.5 marks)
Add both of them ​ = 144+441 = 585 (0.5 marks)
585 is a palindrome number
Therefore, the number Alex has to form = 585 (0.5 marks)