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In a row of Watches, Sonata is 10th from the left and Titan is 14th from the right. If they interchange their positions, Sonata becomes 12th from left. How many Watches are there in the row and number of Watches between Sonata and Titan?

In a row of Watches, Sonata is 10th from the left and Titan is 14th from the right. If they interchange their positions, Sonata becomes 12th from left. How many Watches are there in the row and number of Watches between Sonata and Titan? Correct Answer 25, 1

When two persons change their positions in a row and they are in a definite position.

Total number of persons = (Present position of 1st person + Previous position of 2nd person) – 1

Number of persons between 1st& 2nd = (Position of 1st from left after interchanging – Position of 1st from left before interchanging) – 1

Total number of Watches = (Present position of Sonata + Previous position of Titan) – 1

(12 + 14) – 1 = 26 – 1 = 25

Number of Watches between Sonata & Titan = (Position of Sonata from left after interchanging – Position of Sonata from left before interchanging) – 1

= (12 – 10) – 1

= 2 – 1 = 1

Hence, “25, 1” is the correct answer.

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