At 6o'clock ,a watch strokes 6 times.The time between first and last is 30secs.At midnight 12o' clock how much time for all strokes?
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You have 8 coins. 3 of them weigh x units, 3 y units, 1 a units and 1 b units. They are all mixed and look identical. You have to find the lightest coin in minimum number of weighing (balance)
In a hotel, rooms are numbered from 101 to 550. A room is chosen at random. What is the probability that room number starts with 1, 2 or 3 and ends with 4, 5 or 6?
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Substitute digits for the letters to make the following Division true Y F Y ----------- A Y | N E L L Y | N L Y ---------------- P P L P N H ---------- N L Y N L Y ---------- 0 0 0 Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter N, no other letter can be 3 and all other N in the puzzle must be 3.
if u love someone u can arrange these 10 letters in 5 words I H O M U R E Y N A
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if (x-a) power(degree) is 1 and (x-a)(x-b) power is 2 then (x-a)(x-b).........upto ...(x-z) power(degree) is how much?
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If you are in a jail. there a window having two rodes one is made of Iron and other is of magnet. using a rope how could you find magnet or iron rod.
Replace the letters with the correct numbers. T W O X T W O --------- T H R E E
You have four 9's and you may use any of the (+, -, /, *) as many times as you like. I want to see a mathematical expression which uses the four 9's to = 100 How many such expressions can you make?
Mrs. Watsherface had a garage sale. A custmer named Gina bought an old lamp and a rug. She paid a total of $5.25 for everything. The rug cost 25 cents more than the lamp. How much did each cost?
There are 3 lights (in one room) and 3 swtiches (in another room), one for each, if you only enter into the light room once. How can you find out which switch corresponds to which light?
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