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amazing facts about mathematics

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- 1. Day of the Week: January has 31 days. It means that every date in February will be 3 days later than the same date in January(28 is 4 weeks exactly). The below table is calculated in such a way. Remember this table which will help you to calculate. January 0 February 3 March 3 April 6 May 1 June 4 July 6 August 2 September 5 October 0 November 3 December 5 Step1: Ask for the Date. Ex: 23rd June 1986 Step2: Number of the month on the list, June is 4. Step3: Take the date of the month, that is 23 Step4: Take the last 2 digits of the year, that is 86. Step5: Find out the number of leap years. Divide the last 2 digits of the year by 4, 86 divide by 4 is 21. Step6: Now add all the 4 numbers: 4 + 23 + 86 + 21 = 134. Step7: Divide 134 by 7 = 19 remainder 1. The reminder tells you the day. Sunday 0 Monday 1 Tuesday 2 Wednesday 3 Thursday 4 Friday 5 Saturday 6 Answer: Monday -----------------------------------------------------------------------------------------------------------------------------------
- 2. Names for Powers of 10 Know the names of the Power 10 which is really amazing. Enjoy the Interesting Facts of numbers list. Names for Powers of 10 Values Zero's Names 100 0 One 101 1 Ten 102 2 Hundred 103 3 Thousand 104 4 Myriad 106 6 Million 109 9 Billion 1012 12 Trillion 1015 15 Quadrillion 1018 18 Quintillion 1021 21 Sextillion 1024 24 Septillion 1027 27 Octillion 1030 30 Nonillion 1033 33 Decillion 1036 36 Undecillion 1039 39 Duodecillion 1042 42 Tredecillion 1045 45 Quattuordecillion 1048 48 Quindecillion 1051 51 Sexdecillion 1054 54 Septdecillion / Septendecillion 1057 57 Octodecillion 1060 60 Nondecillion / Novemdecillion 1063 63 Vigintillion 1066 66 Unvigintillion 1069 69 Duovigintillion 1072 72 Trevigintillion 1075 75 Quattuorvigintillion 1078 78 Quinvigintillion 1081 81 Sexvigintillion 1084 84 Septenvigintillion 1087 87 Octovigintillion
- 3. 1090 90 Novemvigintillionn 1093 93 Trigintillion 1096 96 Untrigintillion 1099 99 Duotrigintillion 10100 100 Googol 10102 102 Trestrigintillion 10120 120 Novemtrigintillion 10123 123 Quadragintillion 10138 138 Quinto-Quadragintillion 10153 153 Quinquagintillion 10180 180 Novemquinquagintillion 10183 183 Sexagintillion 10213 213 Septuagintillion 10240 240 Novemseptuagintillion 10243 243 Octogintillion 10261 261 Sexoctogintillion 10273 273 Nonagintillion 10300 300 Novemnonagintillion 10303 303 Centillion 10309 309 Duocentillion 10312 312 Trescentillion 10351 351 Centumsedecillion 10366 366 Primo-Vigesimo-Centillion 10402 402 Trestrigintacentillion 10603 603 Ducentillion 10624 624 Septenducentillion 10903 903 Trecentillion 102421 2421 Sexoctingentillion 103003 3003 Millillion 103000003 3000003 Milli-Millillion --------------------------------------------------------------------------------------- Amazing Prime Numbers Here are few amazing prime numbers, these prime numbers were proved by the XVIIIth century. 31 331 3331 33331 333331 3333331 33333331 The next number 333333331 is not a prime number. Whereas it is multiplied by 17 x 19607843 = 333333331. ------------------------------------------------------------------------------------------------------------------------------------------------------
- 4. Age Calculation Age Calculation Tricks: Step1: Multiply the first number of the age by 5. (If <10, ex 5, consider it as 05. If it is >100, ex: 102, then take 10 as the first digit, 2 as the second one.) Step2: Add 3 to the result. Step3: Double the answer. Step4: Add the second digit of the number with the result. Step5: Subtract 6 from it. Trick 1: Birthday magic Step1: Add 18 to your birth month. Step2: Multiply by 25. Step3: Subtract 333. Step4: Multiply by 8. step5: Subtract 554. step6: Divide by 2. step7: Add your birth date. step8: Multiply by 5. step9: Add 692. step10: Multiply by 20. step11: Add only the last two digits of your birth year. step12: Subtract 32940 to get your birthday!. Example: If the answer is 123199 means that you were born on December 31, 1999. If the answer is not right, you followed the directions incorrectly or lied about your birthday. Math Magic/Tricks 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
- 5. 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.
- 6. 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
- 7. Trick 1: 2's trick Step1: Think of a number . Step2: Multiply it by 3. Step3: Add 6 with the getting result. Step4: divide it by 3. Step5: Subtract it from the first number used. Answer:2 Trick 2: Any Number Step1: Think of any number. Step2: Double the number. Step3: Add 9 with result. Step4: sub 3 with the result. Step5: Divide the result by 2. Step6: Subtract the number with the number with first number started with. Answer: 3 Trick 3: Any three digit Number Step1: Add 7 to it. Step2: Multiply the number with 2. Step3: subtract 4 with the result. Step4: Divide the result by 2. Step5: Subtract it from the number started with. Answer: 5 Maths Tricks with Numbers Trick 1:Quick Square Step1: If you need to square a 2 digit number ending in 5, you can do so very easily with this trick. Step2: Mulitply the first digit by itself + 1, and put 25 on the end. Step3:That is all! Step4: Ex:25 ie(2*(2+1))&25 Answer:625 Trick 2: Multiply by 5 Step1: Take any number, then divide it by 2 Step2:If the result is whole, add a 0 at the end. Step3: If it is not, ignore the remainder and add a 5 at the end. Step4: 2682 x 5 = (2682 / 2) & 5 or 0 Step5:2682 / 2 = 1341 (whole number so add 0) Step6:Ans:13410
- 8. Step7:Letâ€™s try another:5887 x 5,2943.5 (fractional numbers (ignore remainder, add 5) Answer: 29435 Trick 3: Tough Multiplication Step1: If you have a large number to multiply and one of the numbers is even, you can easily subdivide to get to the answer Step2:Ex:32 x 125, is the same as: 16 x 250 is the same as: 8 x 500 is the same as: 4 x 1000 = 4,000 Trick 4: Subtracting from 1,000 Step1:To subtract a large number from 1,000 you can use this basic rule: subtract all but the last number from 9, then subtract the last number from 10: Step2:Ex:1000-648 Step3: subtract 6 from 9 = 3 Step4: subtract 4 from 9 = 5 step5: subtract 8 from 10 = 2 Answer: 352 Roman Numerals Roman Numbers : Roman numerals were originated in ancient Rome. It is based on certain letters which are given values as numerals. Roman Numerals are widely used nowadays, in clocks, books, numberlists, etc.,. 1 I 2 II 3 III 4 IV 5 V 6 VI 7 VII 8 VIII 9 IX 10 X 11 XI 12 XII 13 XIII 14 XIV 21 XXI 22 XXII 23 XXIII 24 XXIV 25 XXV 26 XXVI 27 XXVII 28 XXVIII 29 XXIX 30 XXX 31 XXXI 32 XXXII 33 XXXIII 34 XXXIV 41 XLI 42 XLII 43 XLIII 44 XLIV 45 XLV 46 XLVI 47 XLVII 48 XLVIII 49 XLIX 50 L 51 LI 52 LII 53 LIII 54 LIV 61 LXI 62 LXII 63 LXIII 64 LXIV 65 LXV 66 LXVI 67 LXVII 68 LXVIII 69 LXIX 70 LXX 71 LXXI 72 LXXII 73 LXXIII 74 LXXIV 81 LXXXI 82 LXXXII 83 LXXXIII 84 LXXXIV 85 LXXXV 86 LXXXVI 87 LXXXVII 88 LXXXVIII 89 LXXXIX 90 XC 91 XCI 92 XCII 93 XCIII 94 XCIV
- 9. 15 XV 16 XVI 17 XVII 18 XVIII 19 XIX 20 XX 35 XXXV 36 XXXVI 37 XXXVII 38 XXXVIII 39 XXXIX 40 XL 55 LV 56 LVI 57 LVII 58 LVIII 59 LIX 60 LX 75 LXXV 76 LXXVI 77 LXXVII 78 LXXVIII 79 LXXIX 80 LXXX 95 XCV 96 XCVI 97 XCVII 98 XCVIII 99 XCIX 100 C 200 CC 300 CCC 400 CD 500 D 600 DC 700 DCC 800 DCCC 900 CM 1000 M PUZZLE 1 Divide 110 into two parts so that one will be 150 percent of the other. What are the 2 numbers? PUZZLE 2 The following number is the only one of its kind. Can you figure out what is so special about it? 8,549,176,320. PUZZLE 3 Jennifer took a test that had 20 questions. The total grade was computed by awarding 10 points for each correct answer and deducting 5 points for each incorrect answer. Jennifer answered all 20 questions and received a score of 125. How many wrong answers did she have? PUZZLE 4 When asked about his birthday, a man said:"The day before yesterday I was only 25 and next year I will turn 28."This is true only one day in a year - when was he born? PUZZLE 5 The following equation is wrong: 101 - 102 = 1. Insert one mathematical operator to make it correct.
- 10. PUZZLE 6 NOTHING BUT ZEROS! Use FIVE 0's and any math operators to get 120. PUZZLE 7 What is the next number in the series? 01, 1011, 111021, 31101211, ? SOLUTIONS PUZZLE 1 : 44 and 66 PUZZLE 2 : It's the only number that contains all of the digits in alphabetical order. PUZZLE 3 : 5. She had five wrong answers. If Jennifer had answered all 20 questions correctly, she would have scored 200. Since she only scored 125, she must have lost 75 points. Since each incorrect answer results in a total loss of 15 points (10 for not getting it correct and 5 for answering incorrectly) she must have missed 5 questions. 5 x 15 = 75, 200 - 75 = 125. PUZZLE 4 : He was born on December 31st and spoke about it on January 1st. PUZZLE 5 : 101-10^2 = 1 PUZZLE 6 : ( 0! + 0! + 0! + 0! + 0! )! = 120 PUZZLE 7 : 132110111221...... first its 01 (one 0, one 1) etc.... so its one 3 two 1 one 0 one 1 one 2 and two 1!!!!

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