Friday, 26 July 2013

MBA aspirant stuff


GET stuff to prepare for exam :

  1. For mental calculations: secret of mental calculation
  2. Math's shortcuts :
Index:

enjoy with us
1. Tricks for numbers:

  1.Any prime number greater than 3 is in form of 6k+1 or 6k-1.
  2.Any factorial greater than 4 is end with 0.
       For Example::
         

                                        424
5120
6720
75040
840320
  3.Product of any 4 consecutive Natural number is always divisible by  24.
    for example:
    1*2*3*4=24
    7*8*9*10=5040.(which is divisible by 24)


 4.Any perfect square having last two digits equal is only one no is possible that is:144
 5  N is natural number when :
       (N*N*N)/6 same reminder can be obtain by (N)/6
       This trick will help you to solve many questions regarding reminder problems.
       example:
       find the reminder of :
       6859/6
       here 6859= (19)^3
      which means our answer will be same reminder as (19)/6