Tuesday 5 February 2013

COMPOUND INTEREST IN 20 SECONDS

how to find COMPOUND INTEREST  FOR 2 YEARS IN MOST SIMPLE WAY...

 TRICK FOR 2 YEARS COMPOUNDED ANNUALLY...

suppose u have to find C.I on Rs. 19000 for 2 years at 6% annually..
                          6x2 . 6 square
                          12.36

now use the this formula      Principal  x 12.36 / 100


the answer is Rs.2348.4


TRICK FOR THREE (3) YEARS ANNUALLY..

formula --- 

                     6 x 3 .  6 x 6 x 3.  6 x 6 x 6
                     18 /108 /  216
                      19.1016 .... ( how this comes..)
explanation -  
                      18 /108 /  216
                      18 / 108+2 / 16
                       18+1 / 10 / 16 
                      19.1016


NOTE--  there is increase of approx.  4 after 10% in 3 years...
you can find the answer using the traditional formula also but this method will reduce your time consumption to great extent....  

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30 comments:

  1. lky17 February 2013 at 04:32

    how 19.1016 came? plz explain..

    ReplyDelete
  2. lky20 February 2013 at 04:09

    thnks for replying.. Can u plz share some technique/method to solve series problem..

    ReplyDelete
  3. The Unbound24 February 2013 at 07:41

    What if the rate is different for all years?

    ReplyDelete
    Replies
    1. dodo24 February 2013 at 07:52

      then u have to solve it for given 1 year...
      for 1 year CI and SI (simple interest) are same..

      Delete
    2. Unknown11 October 2013 at 06:25

      What if it is compounded half yearly

      Delete
  4. RainDropz27 February 2013 at 23:53

    in te above explanation.... 6x6x6 =256 but it sud be 216...??
    so final ans 19.1016

    ReplyDelete
  5. Unknown22 May 2013 at 00:27

    Hey Bro If I want to C.I for 4 or 5 Years...then how can i Calculate ? plz replay...

    ReplyDelete
    Replies
    1. Unknown1 November 2016 at 11:21

      it never be asked in competitive exams it is possible only those exams in which calculator is allowed

      Delete
  6. Deepshikha25 May 2013 at 05:24

    Hey dear Please explain what if we have to calculate it for 2 years 4 months or something like that
    and If we have to calculate it when compounded half yearly or quarterly??

    Please reply asap.

    ReplyDelete
    Replies
    1. Unknown1 November 2016 at 11:18

      than it is batter to use ci formula otherwise u can use diagram method to find it

      Delete
  7. Unknown11 July 2013 at 05:06

    Hello sir,
    Is there any tricks to find the rate of interest in the compound interest ,if it is plz expln with example

    ReplyDelete
  8. Unknown29 January 2014 at 21:27

    The compound interest on Rs.7500 at 4% per annum is Rs.612.The period is (in years)?
    answer A. 1yr B. 3yr C. 2yr D. 4yr

    {could some one plz solve this problem using some tricks}answer is 3yr

    ReplyDelete
    Replies
    1. Unknown5 February 2014 at 06:26

      2 years
      for two years by above trick-4*2/4*4=>8/16=>8.16
      7500*8.16/100=612

      Delete
  9. NIRANJAN5 July 2014 at 03:23

    how you caliculated to19.1016

    ReplyDelete
  10. raju9 July 2014 at 22:25

    what is p*m/100. can u plz explain.

    ReplyDelete
  11. Unknown5 September 2014 at 00:12

    what would be for 7% for 3 years...
    can u xplain briefly....

    ReplyDelete
  12. Shreya Agrawal16 September 2014 at 20:06

    A sum of money invested @ compound interest amounts to rs 800 in 3yrs and to rs 840 in 4yrs.The rate of interest per annum is-
    pls give the steps to solve.

    ReplyDelete
  13. Ashish Tiwari28 November 2014 at 11:02

    how to pre pare english.

    ReplyDelete
  14. Unknown10 December 2014 at 04:48

    Now, having a close look at the past two year Compound Interest is not a big thing and this article has proved this to me. Good Job!

    ReplyDelete
  15. Unknown24 February 2015 at 06:34

    Very good trick.
    It can be extended for 4 yrs as:
    calculate the(i) rate % by given method for 3 yrs.Multiply it with given rate%(dont forget to divide by 100) and then add both.Lastly add the given rate% again to get the effective rate%.

    ReplyDelete
  16. Aditya Mahanta26 June 2015 at 03:52

    This comment has been removed by the author.

    ReplyDelete
  17. Unknown11 July 2015 at 19:47

    If I want to C.I for 4 or 5 Years...then how can i Calculate

    ReplyDelete
  18. thangaraj30 July 2015 at 09:49

    This works good for two year. If time exceeds then go with conventional method

    ReplyDelete
  19. thangaraj30 July 2015 at 09:52

    For two years = 6 + 6 + 6 * 6 /100 = 12.36

    ReplyDelete
  20. jaya16 October 2015 at 02:00

    Sir , plz give me much more tricks in compound interest 4 nd 5yrs, and more tricks in bank aptitude xam..

    ReplyDelete
    Replies
    1. Unknown1 November 2016 at 11:26

      this method followed pascal's triangle law which is :-
      time pattern
      2 yr 2,1
      3 yr 3,3,1
      4 yr 4,6,4,1
      5 yr 5,10,10,5,1
      so on....

      Delete
  21. Unknown14 January 2016 at 04:46

    hello sir ....i need ur hlp related study ...msg me on my whatsapp no 9872697646

    ReplyDelete
  22. Unknown29 February 2016 at 05:12

    Very good 😊

    ReplyDelete
  23. Dhirendra Jaysariya26 May 2016 at 00:20

    Any trick for division ?

    ReplyDelete

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