Re: Factorials  
I have not read the full article but it looks superb. Good job ! 
Re: Factorials  
Its T20 version of Number System. Good one..... pushp.... 
Re: Factorials  
wow.. awesome article.. almost all the shortcuts on factorials are elaborately explained.. Thanks SE.. had a chance to look at it at the time of my Number system preparation.. 
Re: Factorials  
I just love the article... I too believe the psychology condition play a big role in your score. Keep posting such wonderful article. 
Re: Factorials  
TG Sir Are these snippets from TG Number System book?? Please do reply ASAP. @SE Sir AWESOME Article Regards: Shaunak 
Re: Factorials  
Hi Shaunak, Yes, nearly 80% of the problems are in TG number system book. Rest of them have been contributed by SE. If you combine the problems in TG's number system book with lessons on CAT CBT Club for your number system preparation, you have an explosive combination. I am doing some selling here, but speaking the complete truth. Total Gadha 
Re: Factorials  
Thanx TG Sir, can i get any printed version of the book?? Regards: Shaunak 
Re: Factorials  
Hi Shaunak, Not yet. You can only get the pdf copy for now. It's too heady for Dagny or me to run around finding a publisher. Total Gadha 
Re: Factorials  
The article starts with nicely written words by TG and SE has done a gr8 Job. Thanks TG and SE,awesome article.. Regards Amit 
Re: Factorials  
Superb ! Great compilation SE !! I would also like to mention that you have chosen the font style and size very well. Thanks a lot ! 
Re: Factorials  
Vivek, Apologize. 
Re: Factorials  
hey SE! u hav shown that all the SE's are fantabulous this article has really improved me a lot thanks man ~another SE 
Re: Factorials  
Vivek, TG has corrected the typo . He replaced 11 by 121. 
Re: Factorials  
only one word Brilliant ! 
Re: Factorials  
hi SE, simply cool article SE sumit

Re: Factorials  
Great Article as always..... could have been posted in 2 parts.... but SE preferred to ctrl+C & ctrl+V in one go..... thanks for the fundas.. 
Re: Factorials  
hi SE, as the article is too long if you have a copy of this article in word or text format then do tell . Regards, Sumit jamwal 
Re: Factorials  
Sumit, Print out the images. As the size of each image, except last one, is exactly equal to that of the standard A4 size paper; there won't be any trouble.  SE 
Re: Factorials  
kudos to TOON DESIGNER 
Re: Factorials  
*bows* thanks user dce 
Re: Factorials  
Sumit, TG has named the images like this: SE1.png, SE2.png, SE3.png, ... SE11.png The exact sequence of the images can be determined through these numbers.  SE 
Re: Factorials  
I was so much carried away by the toon that I forgot to say: kudos to Software Engineer 
Re: Factorials  
last 2 digits concept is not clear please help 
Re: Factorials  
please TG get any publisher its too easy in Delhi to find a publisher and also it is better for students to read from book than pdf file 
Re: Factorials  
Hi user dce, My only gnawing worry this year is to write more and more lessons for my CAT CBT Club. I am okay if I don't sell a single book. But I am not okay if I put the career of my students at stake. Publishers take time. And time is something which is at a premium for me. Total Gadha 
Re: Factorials  
hi SE sir.... thx 4 ur great contribution..... can u provide sum notes on number system..... 
Re: Factorials  
Hi Tarun If the finding the highest power of all the prime number less than 543 is the only way to calculate the number of divisor, I am sure no exam will have that big number. 
Re: Factorials  
Hi Tarun, I don't even know all the prime numbers in 543! Total Gadha 
Re: Factorials  
that was really awesome there should be such shortcut sessions on each topic 
Re: Factorials  
i am always searching for any new posts on this site ...and whenever i find one ..i am more impressed and happy to be a part of TG family...... 
Re: Factorials  
hi SE .. thanks a ton dude for the explaination ..
Best Regards Randeep 
Re: Factorials  
Re: Factorials  
! A Smiley Factorial! 
Re: Factorials  
Hi Amar, The rightmost nonzero digit of 21 × 22 × 23 × .... × 29 × 30 is not 8. Neither is that of 31 × 32 × 33 × .... × 39 × 40 Total Gadha 
Re: Factorials  
A superb article...Thanks for this SE... 
Re: Factorials  
What you said is 200% correct.. I faced this situation last year... 
Re: Factorials  
hi all, pls help me..thanks.. 1. What is the number of ending zeros in 1^1 * 2^2 * 3^3........ 99^99* 100^100. a. 1050 b. 1300 c. 1250 d. None of these. 
Re: Factorials  
1100..option d 
Re: Factorials  
Thnx a ton SE for a very clear explanation! 
Re: Factorials  
hi SE, yup!! you are right ..i did not see 100^100 so 1100 + 200 (for 100^100) ==1300
Regards, Sumit Jamwal 
Re: Factorials  
This is the best article I have read so far......cleared lot of things....thanks a lot 
Re: Factorials  
hi Tg, This is regarding the PDf Number system and geometry PDF books.Are the PDFs in printable format or will they be protected? 
Re: Factorials  
Hi Ashwin, They will be printable. Total Gadha 
Re: Factorials  
thamk you yar 
Re: Factorials  
Sankalp, n = 121 * Q. As n is always divisible by 121, the remainder when any possible value of n divided by 121 is always 0.  SE 
Re: Factorials  
Hi SE excuse my prying...bt its just tht i cudn't see whr in the question its given...that n is divisible by 121....still point understood...thanx a lot... Regards Sankalp 
Re: Factorials  
Thanks SE, For this wonderful article. 
Re: Factorials  
hi sir , find the number of divisors in 15!.. i dint get the last line of this question ... the number of divisors of 15 ! = 12 * 7 * 4 * 3 * 2 * 2 = 4032 cud u plz help me out ? thanks !!! 
Re: Factorials  
Gaurav, 4! = 2^3 * 3^1 Total divisors of 4! = (3+1) * (1+1) = 8. Please refer, Divisor Lesson  SE 
Re: Factorials  
Hi Krunal, The question does not contain 29! It has been done on purpose. Total Gadha 
Re: Factorials  
ohhhh.........yeah...........dis is d kind of mistakes i alwaz do..............nt readin d que. properly..............thanx for drawin my attention.................... 
Re: Factorials  
Great .. thanx 
Re: Factorials  
hi SE i hve the foln. doubts pls n e 1, try 2 fnd d soln
rem when 55555555................93 times / by 98 12341234.....89 times / by 19 find last 3 digits of (12363) ^ 1998 
Re: Factorials  
Hi TG and SE, I am a neophyte to TG..Amazing articles..Expecting more from you.. Thanks a lot for ur Articles... 
Re: Factorials  
This has been one helluva article....Thanks for this awesome contribution....Seriously the best in class!!! 
Re: Factorials  
Find the number of possible value of n=125*m if n is less than or equal to 1000 and m is not divisible by 5? for this question how about m=0,1,2,3.... 
Re: Factorials  
Hi Tg sir pls tell me sol of following ques. How many positive integers less than 100 can be written as the sum of 9 consecutive positive integers 
Re: Factorials  
Engineer ki lingo mein bole to "Fod daala" software engineer..:D..mast samajh aaya factorials..maza aa gaya 
Re: Factorials  
Dear SE, Thanx a lot for your useful article.......... Kunal 
Re: Factorials  
Plz solve dis problem.... Find the no. of consecutive zeroes at the end of S where S= 5^1 + 10^2 + 15^3 +...100^20 A. 245 B. 145 C.160 D.147 E.210 
Re: Factorials  
Wonderful Article indeed. Thanks software engineer. 
Re: Factorials  
Thanks alot vishal

Re: Factorials  
fundoo concepts SE, Reallly superb., 
Re: Factorials  
Great sharing SE....u deserve a high respect in this community of sharing knowledge...!! thankx a zillion !!!! br, CD.. 
Re: Factorials  
kudos to u SE and TG.... every concept is covered here ... warm regards Nishant 
Re: Factorials  
can smeone tell me the last two digits of 36!, kindly give the solution also. 
Re: Factorials  
can smeone tell me the last two digits of 36! excluding the zeros, kindly give the solution also. 
Re: Factorials  
Dhamaal of an article Thanks SE fr sharing the wealth that you have with all of us. 
Re: Factorials  
HI engineer SAHAB I HAVE ONE QUERY IN YOUR EXAMPLE OF LAST TWO NONZERO DIGITS IN 11! IS THE ANSWER 72 OR 68 IF 68 THEN I AM TOTALLY CONFUSED ABOUT HOW? PLEASE DO REPLY 
Re: Factorials  
Hi SE, Article is extrememly superb.... 
Re: Factorials  
amazing........cleared most doubts... thanks SE http://totalgadha.com/pix/s/welldone.gif 
Re: Factorials  
fine article i think everything covered about factorials but is there in any proof i mean mathematical proof or it is a pure observation on smaller number anfd then generalisation 
Re: Factorials  
the topic seems simple but the kind of funda discussed here, its juss awesome and shows hoe much I under estimated this important topic! GREAT article! Thankx SE!!!! 
Re: Factorials  
thanx ,th two articlson rmaindrs and factorials, i hav rad thm all full and vry carfully, gaind a lot rally 
Re: Factorials  
Subhash Medhi, ab= 36 or 86 last two digits must be divisible by 4 (Funda#6) 86 is not divisible by 4 so, ab=36  SE 
Re: Factorials  
Can any one please tell me what is the sum of: S = 1!+2!+3!+4!+...........+n! 
Re: Factorials  
10000! = (100!)^{K} × P, where P and K are integers. What can be the maximum value of K? 102 103 104 105 
Re: Factorials  
i think its 103 pls confirm 
Re: Factorials  
GREATTTTTTTTTTT Article.Thanks indeed. KUDOS!!!! 
Re: Factorials  
The article is exceptional... It'll help a lot... Thanks 
Re: Factorials  
Thanks a lot SE 
Re: Factorials  
can you please share the link of these ebooks... 
Re: Factorials  
Sorry Sir..above query is illogical.... 
Re: Factorials  
software enginner saab .. you are god!!! i really wish you guys come to chennai and south india too and open TG centers here Brilliant article sirr!!!!! 
Re: Factorials  
the higest power of 2 contained in 20! is 33.....how is that possible???? 
Re: Factorials  
I couldn't understnd how to find the value of 'a' in last 2 nonzero digits of 25! . Help me wid tt .? 
Re: Factorials  
Simply awesome.. hats off to you guys 
Re: Factorials  
Can u please explain the concept used to solve this question. the quotient obtained when n is divided by 121 and 11 are coprime numbers? 