Question:medium
There are two main entrances to a building with five floors. Each entrance leads to three lifts and each lift can stop at all the five floors. A person enters the building and reaches a floor. The number of possible ways that the person can reach the floor, is
There are two main entrances to a building with five floors. Each entrance leads to three lifts and each lift can stop at all the five floors. A person enters the building and reaches a floor. The number of possible ways that the person can reach the floor, is
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When choices are independent, multiply them to get total number of outcomes.
Updated On: Apr 24, 2026
- $15$
- $25$
- $10$
- $30$
- $50$
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The Correct Option is D
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