Subject: General Aptitude · Chapter: Number System · Exam: 2010 · Marks: · Difficulty:
A is counting the numbers from 1 to 31 and B from 31 to 1. A is counting the odd numbers only. The speed of both is the same. What will be the number which will be pronounced by A and B together?
Answer
Answer (as printed):
Explanation
The numbers pronounced by A and B in order are: A: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31. B: 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16. Clearly both A and B pronounce the number 21 together.
Explanation as extracted from the printed page; notation may be imperfect.