Math Magic

Author Topic: Math Magic  (Read 1336 times)

Offline Anuz

  • Faculty
  • Hero Member
  • *
  • Posts: 1987
  • জীবনে আনন্দের সময় বড় কম, তাই সুযোগ পেলেই আনন্দ কর
    • View Profile
Math Magic
« on: April 28, 2012, 06:00:55 PM »
                                                 Trick 1: Number below 10
Step1: Think of a number below 10.
Step2: Double the number you have thought.
Step3: Add 6 with the getting result.
Step4: Half the answer, that is divide it by 2.
Step5: Take away the number you have thought from the answer, that is, subtract the answer from the number you have thought.
                                                                                                                                 Answer: 3

                                                   Trick 2: Any Number
Step1: Think of any number.
Step2: Subtract the number you have thought with 1.
Step3: Multiply the result with 3.
Step4: Add 12 with the result.
Step5: Divide the answer by 3.
Step6: Add 5 with the answer.
Step7: Take away the number you have thought from the answer, that is, subtract the answer from the number you have thought.
                                                                                                                                 Answer: 8

                                                      Trick 3: Any Number
Step1: Think of any number.
Step2: Multiply the number you have thought with 3.
Step3: Add 45 with the result.
Step4: Double the result.
Step5: Divide the answer by 6.
Step6: Take away the number you have thought from the answer, that is, subtract the answer from the number you have thought.
                                                                                                                                Answer: 15

                                                      Trick 4: Same 3 Digit Number
Step1: Think of any 3 digit number, but each of the digits must be the same as. Ex: 333, 666.
Step2: Add up the digits.
Step3: Divide the 3 digit number with the digits added up.
                                                                                                                               Answer: 37

                                                  Trick 5: 2 Single Digit Numbers
Step1: Think of 2 single digit numbers.
Step2: Take any one of the number among them and double it.
Step3: Add 5 with the result.
Step4: Multiply the result with 5.
Step5: Add the second number to the answer.
Step6: Subtract the answer with 4.
Step7: Subtract the answer again with 21.
                                                                                                    Answer: 2 Single Digit Numbers.

                                                   Trick 6: 1, 2, 4, 5, 7, 8
Step1: Choose a number from 1 to 6.
Step2: Multiply the number with 9.
Step3: Multiply the result with 111.
Step4: Multiply the result by 1001.
Step5: Divide the answer by 7.
                                                                                Answer: All the above numbers will be present.

                                                     Trick 7: 1089
Step1: Think of a 3 digit number.
Step2: Arrange the number in descending order.
Step3: Reverse the number and subtract it with the result.
Step4: Remember it and reverse the answer mentally.
Step5: Add it with the result, you have got.
                                                                                                                            Answer: 1089
                                                    Trick 8: x7x11x13
Step1: Think of a 3 digit number.
Step2: Multiply it with x7x11x13.
Ex: Number: 456,                                                                                                  Answer: 456456

                                                    Trick 9: x3x7x13x37
Step1: Think of a 2 digit number.
Step2: Multiply it with x3x7x13x37.
Ex: Number: 45,                                                                                                    Answer: 454545
                                                     
                                                    Trick 10: 9091
Step1:Think of a 5 digit number.
Step2:Multiply it with 11.
Step3:Multiply it with 9091.
Ex: Number: 12345,                                                                                          Answer:1234512345
Anuz Kumar Chakrabarty
Assistant Professor
Department of General Educational Development
Faculty of Science and Information Technology
Daffodil International University

Offline Omar Faruk Mazumder

  • Administrator
  • Full Member
  • *****
  • Posts: 210
  • Test
    • View Profile
Re: Math Magic
« Reply #1 on: April 07, 2013, 10:39:39 AM »
nice post sir...
Omar Faruk
Sr. Admin Officer (VC Office)

"Rabbi Zidni Ilma"
May Allah help to increase us with knowledge that benefits. Ameen.