Multiple choice

A cat and mouse are descending from the ladder of eternity. The cat can jump 10 steps at a time and the mouse descends by jumping 4 steps at a time. The mouse is at 24th step when cat starts from the top of the ladder. At which step from top does the cat catches the mouse.

  1. 30

  2. 40

  3. 60

  4. 80

  5. 120
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct.

The essence of the question is least common multiples of two numbers.

If the ladder of eternity would have been a circular one and the cat & mouse constantly running they might have always met at steps at common multiples like 40, 80, 120, 160 etc.

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