These questions are based on the five three digit numbers given below :346 815 428 271 732

These questions are based on the five three digit numbers given below :
346 815 428 271 732

If ?2? is added to the second digit of every even number and ?1? is subtracted from the first digit of every odd number, in how many numbers will a digit appear twice ?
1). Three
2). Two
3). Four
4). One

2 answers

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Guest · Answer 1 · 2019-04-06 01:17:12

Solution

Series : 346 815 428 271 732

If ‘2’ is added to the second digit of every even number and ‘1’ is subtracted from the first digit of every odd number, new numbers :

346 -> 366

815 -> 715

428 -> 448

271 -> 171

732 -> 752

In 3 numbers, (6,4,1) appear twice.

=> Ans - (A)

Guest · Answer 2 · 2019-04-17 10:10:38