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If in the number 56789, 1 is added to every odd digit and 1 is subtracted from every even digit, then what will be the 3th digit from the left end?

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RRB Officer Scale-I (30 Sep 2018) Mains Memory Based Paper
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  1. 6
  2. 0
  3. 4
  4. 8
  5. None of these

Answer (Detailed Solution Below)

Option 4 : 8
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Detailed Solution

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Given number is: 56789

After 1 is added to every odd digit and 1 is subtracted from every even digit as per the question the number become: 658710

Thus, the 3th digit from the left end will be = 8
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Q1.How many even numbers are there in the sequence which are immediately followed by an odd number? 4 6 7 8 3 3 4 5 7 6 8 9 2 7 9 1 3 5 2
Q2.How many such 9s are there in the following number sequence which are immediately preceded by 5? 7 9 6 9 5 9 8 4 7 9 5 7 4 5 9 2 3 7 9 1 2 7 5 9 7 7
Q3.Refer to the following series and answer the question (all numbers are single digit numbers only). (Left) 6 2 1 3 7 6 9 7 4 3 5 2 3 4 3 4 2 3 1 5 7 9 5 8 5 7 5 (Right) How many such even digits are there each of which is immediately preceded by an even digit and also immediately followed by an odd digit?
Q4.This question is based on the five, three-digit numbers given below. (Left) 721 145 342 372 547 (Right) (Example- 697 – First digit = 6, second digit = 9 and third digit = 7) (NOTE: All operations to be done from left to right.) If all the numbers are arranged in descending order, the position(s) of how many numbers will remain unchanged?
Q5.This question is based on the five, three-digit numbers given below. (Left) 842 234 371 723 463 (Right) (Example- 697 – First digit = 6, second digit = 9 and third digit = 7) (NOTE: All operations to be done from left to right.) What will be the resultant if the third digit of the highest number is added to the second digit of the lowest number?
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Q6.Which of the following letters in the English alphabet series is as far from H as U is from N?
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Q8.Suppose the first and the second letters of the word INCOMPREHENSIBLE changed places, also the third and the fourth, the fifth and the sixth, and so on. In the new word, thus formed, which letter would be 10th from the left?
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