Arrange four nines(9) and a one(1) and only one mathematical symbol to make it equal to 100 ?

More Questions from Math Puzzles

• Which number multiplied by itself will give the output as 12345678987654321 ?
• How many letters of the word FAINTS, will their order in the word and that when the letters are arranged in the alphabetical order, remain the same?
• Solve the following puzzle You are going to visit your grandmother on Mother's day. You want to give her two cakes. However, to get to her house you must cross seven bridges. At each bridge is a troll who demands ½ of all of your cakes as the price to pass. However, this troll, being a nice troll, feels bad and gives you back 1 of the cakes that he took. The puzzle to solve: How many cakes must you leave with to be able to give your grandmother 2 cakes
• A cuboid shaped wooden block has 6 cm length, 4 cm breadth and 1 cm height. Two faces measuring 4 cm x 1 cm are coloured in black. Two faces measuring 6 cm x 1 cm are coloured in red. Two faces measuring 6 cm x 4 cm are coloured in green. The block is divided into 6 equal cubes of side 1 cm (from 6 cm side), 4 equal cubes of side 1 cm(from 4 cm side). How many cubes will have green colour on two sides and rest of the four sides having no colour ?
• Puzzle : Identical Balls There are 8 identical balls. In that one of the ball is overweight. There are only two chances to weigh in the weighing machine. How to find the overweight ball?
• Riddle How can you add eight 8's to get the number 1,000? (only use addition)
• A number of cats got together and decided to kill between them 999919 rats. Every cat killed an equal number of rats. Each cat killed more rats than there were cats. How many rats do you think that each cat killed ?
• Puzzle : Bridge Crossing Jim, Jeanne, Louis and Anne wants to cross the bridge at night. They have only one torch light with them. Only two can cross the bridge at a time. They need torch light to cross the bridge. Each of them walks at a different speed. Jim needs 1 minute, Jeanne needs 2 minutes, Louis needs 5 minutes and Anne needs 10 minutes. A pair must walk together at the rate of the slower person. How these people can cross the bridge within 17 minutes?
• In a Certain Country 1/2 of 5 = 3. If the same proportion holds, what is the value of 1/3 of 10 ?
• Puzzle : Sequence of numbers Sequence of numbers are 1, 11, 21, 1211, 111221. What will be the next one in the above sequence?

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