Direction (set of 5 questions): The following questions are based on Six, three digits numbers given below.
418, 823, 913, 546, 876, 156
If in each of the given numbers, each of the odd number is changed to previous digit (according to number (series) and each even number is changed to next digit in the number series, in how many numbers thus formed will two odd digits appear?
Solution
418 823 913 546 876 156
According to question
509 932 802 457 967 047
Numbers have two odd numbers= 4