I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
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Friday, May 29, 2009
Fill in the Blank
What number should replace the question mark?
7 9 4 5 43
8 7 3 3 47
10 4 4 7 12
12 5 4 2 ?
A large truck is crossing a bridge 1 mile long. The bridge can only hold 14000 lbs, which is the exact weight of the truck. The truck makes it half way across the bridge and stops. A bird lands on the truck. Does the bridge collapse? Give a reason.
Nope. Becoz the truck would have burned fuel along the way. :) (Ofcoz this is subject to the weight of the bird being = or < the weight of the amount of fuel that has been burned... =p)
I think it's 1.5 (too tired to actually type up the calculations - srry)
Answer to the truck:
I agree with the anonymous comment before mine, in a way - I think that the truck actually ran out fuel (like, fully), and the bird replaced it ... maybe, i dunno, this one's a guess.
oh, 52 makes complete sense! I was getting into really complicated multiplication then subtracting all kinds of random answers! My brain turned to mush so I peeked at the comments and realized how off I was!!! :)
The driver in the truck got out when the truck broke down to get help so there was weight room for the bird :D
But for alexis... I think the truck will collapse in its first move... Cause the truck weight is 14000 lbs + the driver + the bridge is no longer strong enough to hold 14000 lbs (except its new). So i think the truck will fall...
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52,
ReplyDeletebecause:
7 x 9 = 63 - (4 x 5) = 43
8 x 7 = 56 - (3 x 3) = 47
10 x 4 = 40 - (4 x 7) = 12
12 x 5 = 60 - (4 x 2) = 52
52
ReplyDelete(12.5)-(4.2)=52
ReplyDeleteGandalfGecko, you are awesome. how did you manage to find out the ans soo soon? good job...
ReplyDeletei must be real bad in math to.
more jokes at http://grandfathersjoke.blogspot.com/
ReplyDeleteanswer this:
ReplyDeleteA large truck is crossing a bridge 1 mile long. The bridge can only hold 14000 lbs, which is the exact weight of the truck. The truck makes it half way across the bridge and stops. A bird lands on the truck. Does the bridge collapse? Give a reason.
more at http://unscrambletheletters.blogspot.com/
Answer to Alexis
ReplyDeleteNope. Becoz the truck would have burned fuel along the way. :)
(Ofcoz this is subject to the weight of the bird being = or < the weight of the amount of fuel that has been burned... =p)
- Allyssa
Answer to the number thing:
ReplyDeleteI think it's 1.5 (too tired to actually type up the calculations - srry)
Answer to the truck:
I agree with the anonymous comment before mine, in a way - I think that the truck actually ran out fuel (like, fully), and the bird replaced it ... maybe, i dunno, this one's a guess.
♥R•H♥
Answer to the truck one kinda depends on the weight of the bird but i would say the truck would collapse along with the bridge.
ReplyDeleteas for the number answer i also agree that the answer is 52... (my calculation method was similar to that of GandalfGecko's...)
oh, 52 makes complete sense! I was getting into really complicated multiplication then subtracting all kinds of random answers! My brain turned to mush so I peeked at the comments and realized how off I was!!! :)
ReplyDeleteThe driver in the truck got out when the truck broke down to get help so there was weight room for the bird :D
Okay, I agree with Sarah for the truck one, and for the other one, I guess 1.5 or the rounded-off 2 might have been wrong - oops?
ReplyDelete♥R•H♥
Can't answer the math one... >_<
ReplyDeleteBut for alexis... I think the truck will collapse in its first move... Cause the truck weight is 14000 lbs + the driver + the bridge is no longer strong enough to hold 14000 lbs (except its new). So i think the truck will fall...
- Morenza Mayobi
52 is the answer. As several people pointed out, (12*5)-(4*2) = 52.
ReplyDeleteoh..... my bad
ReplyDeletesrry
♥R•H♥