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- Question
Which number multiplied by itself will give the output as 12345678987654321 ?
- Correct Answer
- 11 * 11 = 121 111 * 111 = 12321 what we observe is that the square of the number follows a pattern: 2 1's gives 121 3 1's gives 12321 so to get 12345678987654321 we need to get square of 9 1's(111,111,111)
- 1. Arrange four nines(9) and a one(1) and only one mathematical symbol to make it equal to 100 ? Discuss
- 2. Puzzle : Clock Divide the clock's face into three equal parts exactly with two lines. Therefore the sum of the numbers in the three equal parts should be same Discuss
- 3. Two Fathers and Two Sons Riddle Two fathers and two sons sat down to eat eggs for breakfast. They ate exactly three eggs, each person had an egg. The riddle is for you to explain how Discuss
- 4. If A is substituted by 4, B by 3, C by 2, D by 4, E by 3, F by 2 and so on, then what will be total of the numerical values of the letters of the word SICK?
Options- A. 11
- B. 12
- C. 10
- D. 9 Discuss
- 5. What can go up a chimney down, but cannot go down a chimney up? Discuss
- 6. 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?
Options- A. Two
- B. One
- C. Three
- D. Nil Discuss
- 7. 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 Discuss
- 8. 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 ?
Options- A. 8
- B. 24
- C. 16
- D. 4 Discuss
- 9. 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? Discuss
- 10. Riddle How can you add eight 8's to get the number 1,000? (only use addition) Discuss
Math Puzzles problems
Search Results
Correct Answer: 199 - 99 = 100
Correct Answer: 26 + 26 + 26 = 78
Correct Answer: one of the 'fathers' is also a grandfather Therefore the other father is both a son and a father to the grandson In other words, the one father is both a son and a father
Correct Answer: 11
Correct Answer: An Umbrella Yes, when it is open it can't be fit under a chimney but when it is closed it can be fit down a chimney
Correct Answer: Two
Correct Answer: Do the math and you will see that this puzzle is based on the fact taht (2)=1 and 1+1=2
Correct Answer: 8
Correct Answer: First weigh 3 against 3 balls If the ball contains among these six balls, then take the three balls which weighed over, and weigh the ball 1 against 1 If the balls are not equal and any one of the ball weighs more, that is the overweight ball, else the one among the three which is not weighed is the ball If the 3 against 3 balls were equal, then weigh the 2 balls, then the overweight ball will be found
Correct Answer: The key to this math riddle is realizing that the one place must be zero 888 +88 +8 +8 +8 =1,000
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