Where X = 1002006 + 9x1002002 – 2
Find the sum of digits of X
=104012 + 9.104004 – 2
=104004(100000009) -2
=100000009000.........................0
-2
4004 times
=100000008999............................98
4004
times
= 1 + 8 + 9 x 4003 + 8
=17 + 36027
= 36043
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