Sign up. Monkeys and Doors. Ten Black and White Socks. Cross the Bridge. Wizards and Drawves. Color of the last ball. Arrange Cubes. Measure Time by Burning Ropes. Dinner Hand Shakes. Color of the last ball II. Measure Time by Hourglass. Make a Statement. Bee Travel. Prisoners and Poison. World Trips. Next Number. One Mile on the Globe. Marbles in Jar. Gates of Heaven. Fastest Horses. Train Station. Measure Milk by Cans. Cross the Bridge II. Last Palindromic Date. Fake Note. Next Number II. Eggs and Building.
Celebrity Problem. Spider's Web. Ratio of Boys and Girls. How much of a loss did the shopkeeper take? Probability of choosing random answer Ratio of Boys and Girls in a Country where people want only boys Three hat colors Microsoft Puzzle How will divide the pearls to increase your chances of survival?
Red and Blue Marbles Blind Game! Be the first to post a comment. Add a comment Cancel reply You must be logged in to post a comment. Sign In. A vulture is flying from Station A to station B at 25 mph. When the vulture reaches at the train moving from Station B to A, it starts flying back and flies at the same speed till it reaches the train moving from station A to B and starts flying in the reverse direction again.
The vulture keeps flying to and fro till both the trains collide with each other. What is the total distance that is traveled by the vulture? To solve this question, we will have to use the concept of relative speed. Difficulty Popularity Here is a situation. You have 10 boxes that contains balls with each of the ball weighing 10 grams precisely. Now among the boxes, one of the box comprises of defective balls with each defective ball weighing 9 grams.
You have been provided with an electronic weighing machine but you are allowed to use it only once. Can you find out which box contains defective balls? The question can practically disarm you. But we promise by the time you read the solution, you will find that it was way easy than you were thinking.
Let us name the boxes with a number - Box1, Box Now you must be familiar with the weights of the balls precisely. By saying that we are not implying that you will have to take one ball from every box and judge the weight of every ball. What you have to do is pick one ball from Box 1, 2 balls from Box 2, 3 balls from Box 3, Thus after taking balls from every box in such a manner, you will finally have 55 balls in total.
There comes the time to use the weighing machine. But since one of the box has defected balls, the weight will be less than that. Here is the tricky part and explains why we took different number of balls from each box. If the total weight is less than 1 gram, then the defective box is the Box 1 since we took 1 ball from that box. If the Box 2 is defective, the total weight will be less than 2 grams.
In similar fashion you can identify the defective box by analyzing the total weight that is calculated by the weighing machine. Difficulty Popularity The scenario comprises of a wobbly bridge and four people. It is the night time and the people have only one torch. Without torch one may risk his life in crossing the bridge. Also we have a condition; the bridge is not quite strong and can hold only two persons together at one. The four people take different time to cross the bridge - 1 min, 2 min, 7 min and 10 min.
Since the torch is a necessity and the bride can't hold more than two persons at a time, two persons must travel at a time out of which one must return with the torch so they don't risk their life crossing in the dark. What is the shortest time that will be required for all of them to cross the bridge? Were you thinking of using the fastest person who takes one minute to travel to and fro till everyone has reached the other end?
If we pay attention towards finding a way to merge the one taking 7 minutes and the one taking 10 minutes, we will have to acknowledge the fact that one of them will also have to return back which will take much more time than 21 minutes. What if we use the person taking 2 minutes to escort the one taking 1 minutes across? Difficulty Popularity You have infinite supply of water.
You also have 5 quart and 3 quart buckets. What is the least number of steps you will require to measure precisely 4 quarts? Fill the 3 quart bucket 5 quart bucket has 0 quarts and 3 quart bucket has 3 quarts Pour it entirely in the 5 quart bucket 5 quart bucket has 3 quarts and 3 quart bucket has 0 quarts Fill the 3 quart bucket 5 quart bucket has 3 quarts and 3 quart bucket has 3 quarts Pour the contents to fill the 5 quart bucket 5 quart bucket has 5 quarts and 3 quart bucket has 1 quart Empty down the 5 quart bucket 5 quart bucket has 0 quarts and 3 quart bucket has 1 quart Pour the water from 1 quart bucket to 5 quart bucket 5 quart bucket has 1 quart and 3 quart bucket has 0 quart Fill the 3 quart bucket 5 quart bucket has 1 quart and 3 quart bucket has 3 quarts Pour the contents from 3 quart bucket to 5 quart bucket 5 quart bucket has 4 quarts and 3 quart bucket has 0 quarts We are done and it took us eight steps to measure exactly 4 quarts of water.
Difficulty Popularity We have an egg problem again. There is a 36 story building for which you have complete access. You have two eggs and you must follow the below facts: An egg that does not breaks on falling can be re used. The minimum number of drops required are eight. We will begin from the floor 8. For the worst scenario possible, the maximum number of droppings will be eight only.
Difficulty Popularity If you walk one mile south, then one mile east and then one mile north, you reach the place where you started. In such a scenario, how many points are there on the globe to make it happen? Did you consider the southern hemisphere? If you did you must be knowing that there is a ring near the South Pole with a circumference of one mile. Consider the situation that you are standing on one mile north of the ring at any point.
Now if you walk on the southern direction and cover one mile, you will be standing on the ring. Traveling one mile east will bring you on the circumference of the ring.
0コメント