View Full Version : Time saving Shortcuts!!!

11-14-2004, 02:52 PM
hey guys...
hello every one..
i figured out that people who cant reach 800 in quant is not due 2 lack of caliber but lack of time managmnt,,so iam startingthi snew thread coz any one of u who came through some noteworthy formulae and useful short cuts can plz share them with others so that it helps every2 2 sav lots of time and improves score dramatically....
i would request the studs 2 plz send them in th eform of doc files or pdf files so that it seasy 2 downloa dan dstudy..

11-14-2004, 08:10 PM
here are a few frm my side.

1. http://www.urch.com/forums/showthread.php?t=15393 (chk out post #3 (http://www.urch.com/forums/showpost.php?p=80538&postcount=3) #8 (http://www.urch.com/forums/showpost.php?p=80643&postcount=8) #10 (http://www.urch.com/forums/showpost.php?p=80669&postcount=10))

2. #13 (http://TestMagic.com/forums/showpost.php?p=78714&postcount=13) (for power of prime factor in n! , ps. read the alternate method.)
also, refer to-- http://www.urch.com/forums/showthread.php?t=14462

3. http://www.urch.com/forums/showthread.php?t=15242
4. http://www.urch.com/forums/showthread.php?t=14463
5. http://www.urch.com/forums/showthread.php?t=14477
6. http://www.urch.com/forums/showthread.php?t=14659 (do chk out #2 (http://www.urch.com/forums/showpost.php?p=75553&postcount=2))
7. http://www.urch.com/forums/showthread.php?t=14858


Bull. http://us.i1.yimg.com/us.yimg.com/i/mesg/tsmileys2/37.gif

08-16-2006, 08:45 PM
Dear bull fighter, I was extremely happy seeing this post, but when I tried to go to these pages, I get the message "Oops! Sorry, that page isn't here." I guess test magic site has been redesigned or something. Can you please update the page links. It will be really very helpful for me and many other novice members.

08-16-2006, 09:18 PM
Replace "TestMagic" with "urch" in all above links.

08-17-2006, 01:34 AM
Q. When dividing 20! by 2^x, what is the maximum value that x can take?

p.n. 20! is 20factorial.


20/2 = 10 (record this)
20/4 = 5 (record this)
20/8 = 2 (record this, just take the integer value)
20/16 = 1 (record this, just take the integer value)

Now sum all of them : 10 + 5 +2 +1 = 18. which is the answer.
The idea is to keep dividing by the powers of 2, till the highest power of 2 less than 20, in this case 16....

bullfighter, i didnt get the expln for this one!:(