Spoiler for I'll take a stab...
yes for 3 digits, but fewer
Jump to content
|Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account.
As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends.
Of course, you can also enjoy our collection of amazing optical illusions and cool math games.
If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top.
If you have a website, we would appreciate a little link to BrainDen.
Thanks and enjoy the Den :-)
Posted by TimeSpaceLightForce on 17 January 2014 - 06:41 PM
Spoiler for I'll take a stab...450
yes for 3 digits, but fewer
Posted by TimeSpaceLightForce on 07 January 2014 - 04:52 PM
9 ? 7 12
Posted by TimeSpaceLightForce on 30 December 2013 - 07:42 PM
How many times does a 24-hour format digital clock greet or spells "hELLO" everyday?
Posted by TimeSpaceLightForce on 26 December 2013 - 07:25 PM
It is 6 o'clock ..the ant from the tip of the clock's half foot Hour-hand must travel home to12 o'clock mark under the tip of 1ft Second-hand.
The clocks Minute hand is 9 inches.
The ant travels 1ft/min along the hands without stopping and reverses its direction when reaching the pivot end or the tip of the hands .
It can shift to any hand that is directly above or below it while resuming direction.
How long shall it take for the ant to arrive home?
Posted by TimeSpaceLightForce on 16 November 2013 - 08:10 PM
Posted by TimeSpaceLightForce on 31 August 2013 - 02:07 PM
Eight lamps are positioned forming the corners of a 1m cube .
The lamps light up when a beam from laser gun passes through
their centers (sensors). Using 5 mirrors to deflect the laser path,
how should the mirrors turn all the lamps on with a single shot?
/ / | \ \ M
o o o L
o o o
Posted by TimeSpaceLightForce on 24 August 2013 - 09:17 PM
Posted by TimeSpaceLightForce on 10 July 2013 - 05:51 PM
A yard stick was cut on 1 foot mark so that the other 2 footer stick cut can be placed on top of another yardstick to make it roll or pivot
on its ends and middle around (above and below) the yardstick clockwise.
While the 1 footer stick was placed on top of 2 footer stick to make it roll around it counterclockwise without touching the fixed yardstick.
Starting at position shown and same 1 RPM motion, how long will it take for the sticks to knock the ball down?
Posted by TimeSpaceLightForce on 26 May 2013 - 08:31 AM
Posted by TimeSpaceLightForce on 24 May 2013 - 10:06 PM
Posted by TimeSpaceLightForce on 22 May 2013 - 05:39 AM
Posted by TimeSpaceLightForce on 19 May 2013 - 08:19 PM
The OP does not say there is a third contest, but I can see how it's implied.
"In a row" is redundant if not.
No second contest neither,just best of 3 picks because there are six satchels.. sometimes out of the box can be away from the box.
but i figured a third is the right chance of winning 2 in a row for the lucky contestant..
Posted by TimeSpaceLightForce on 16 May 2013 - 02:54 PM
There are satchels where 2 has paper, 2 has scissors and 2 has rock inside.
2 contestants picks up one satchel each, open them to determine who wins.
Then picks up another to determine who wins. 2 wins is needed to determine
the winner of the contest. What is the chance of winning 2 in a row ?
Posted by TimeSpaceLightForce on 02 May 2013 - 11:56 AM
How will you make a slice on a cube ice so that it will melt quickest?
Posted by TimeSpaceLightForce on 25 April 2013 - 05:25 PM
Community Forum Software by IP.Board 3.4.7
Licensed to: BrainDen