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SQUARE ROOT TIPS AND TRICKS First we will have to remember this table  Number Square Last Digit 0 0 0 1 1 1 2 4 4 3 9 9 4 16 6 5 25 5 6 36 6 7 49 9 8 64 4 9 81 1 The last digits for the squares of 1 and 9 are both 1. The last digits for the squares of 2 and 8 are both 4. The last digits for the squares of 3 and 7 are both 9. The last digits for the squares of 4 and 6 are both 6. Now suppose we want to find the square root of 3249   Step-1 :  Ignore the last two digit i.e 49                 Consider only 32                  Now 5^2=25 will be the number which is close to 32 because 6^2=36 is greater than 25         ...

REMAINDER TRICKS Before going into the remainder tricks, I would like to tell u about Euler number. What is Euler number and how to find out the Euler number of any other number?           Answer of above question is very simple..                         Euler number is total number of numbers of co-prime that exist less then that number.               For example    6                                        So 1 and 5 are the only co-prime which exists less then 6.                                      So Euler number for 6=2.          How to find Euler number of big numbers?           ...

HOW TO FIND LAST TWO DIGIT IN POWER OF EVEN NUMBERS                   To find out the last two digit first note some tips                      (2^10)^odd number=24 (Last two digit)                      (2^10)^even number=76 (Last two digit)          And product of 76 with any power of two will be equal to that number i.e last two digit.                For example : 76 * 2^2 =04 will be the last two digit                                      76 *  2^3 =08 will be the last two digit                                      76 *  2^4 =16 will be th...

MUST READ APTITUDE TRICKS                     First of all to apply these tricks you will have to remember square of numbers from 1-30. 1* 1 2* 4 3* 9 4* 16 5* 25 6* 36 7* 49 8* 64 9* 81 10* 100 11* 121 12* 144 13* 169 14* 196 15* 225 16* 256 17* 289 18* 324 19* 361 20* 400 21* 441 22* 484 23* 529 24* 576 25* 625 26* 676 27* 729 28* 784 29* 841 30* 900    How to calculate the square of a number  close to 50.  Tricks=  First find how much its excess or less from 50.                Like :  54( its 54-50=4 excess)                          46 (its 50-46=4 less)                     ...