The average of the two- digit numbers, which remain the same when the digits interchange their positions, is:
সমাধান
সঠিক উত্তর: Option C
The average of two-digit numbers, which remain the same when the digits interchange their positions, is .. 11,22,33,44,55,66,77,88,99
average is=(11+22+33+44+55+66+77+88+99)/9
