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N is a five-digit positive integer such that when multiplied by a single digit, the result is a six-digit positive integer having precisely 5 identical nonzero digits.

Find the respective minimum and maximum value of N.

(No Solution Yet, 2 Comments) Submitted on 2014-10-30 by K Sengupta   
Difficulty: 1 of 5 Bonus: Balloon in a car (in Science) Rating: 3.67
You work for a balloon delivery service and you are delivering a single, helium-filled balloon in your car. To prevent the balloon from bouncing around on the ceiling while you are driving you have tied a string with a weight on it to the balloon. The weight is resting on the floor and the balloon is floating just below the ceiling.

When you accelerate, does the balloon stay where it is, move backward, or move forward? What does it do when you make a turn?

Assume all the windows are closed and the vents are turned off so there is no air flow inside the car to affect the balloon.
(Solution Posted, 18 Comments) Submitted on 2004-12-16 by Sing4TheDay   
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