Question

There is a ladder with 100 steps. One of the step is the highes
step from where you can drop a water balloon without
bursting. If the water balloon is dropped from above that
step(highest step), it will burst. If it is dropped from that
step(highest step) or below steps, it will be completely
undamaged and you can drop the undamaged water balloon
again. How will you find the step with 1 water balloon?​

Answer 1

Climb on to the first step and throw the water balloon

Answer 2

You will find the step with 1 water balloon by starting from the bottom most step.

• Start from the lowest step and drop the water balloon.
• If the water balloon doesn't burst proceed one step higher.
• Again drop the balloon and proceed to the next step.
• On Nth step the balloon will burst and the step below the Nth step the (N-1) step will be the highest step you can drop the balloon from without bursting.