Let
If the sum of all the element of the set then
is equals to:
Option: 1 1
Option: 2 3
Option: 3 5
Option: 4 7
Here A is the set of 3 digit number so we need to find the sum of 3-digit number of set B and set C.
3 digit number of the form are
Similarly'
3 digit number of the form are
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