BrainDen.com - Brain Teasers

# Rob_Gandy

Members

175

2

1. ## Obscure Jokes

NaCl ------ NaOH The base is under assault!
2. ## Can you decipher this?

This is my first try at this so I hope I do good. The following is a ciphered quote and the name of the speaker. MQJLGTBEVNWBGSXSBYAAJGLVKZAKDXWMSHWJENHMXIYBGIQGSBSBNLLMIJLUJVPHFNVLYTSSRPG The key/for this, my/mystery,/lies only/in an important key word.

11. ## What is the missing term of the sequence?

What is the missing number in the sequence? 0, 1, 6, 105, 27 030,_______________, 7 608 434 000 728 254 870 The sequence here may seem unusual, but examination may reveal obvious steps required to solve for each element in it.
12. ## Infinite monotone subsequence

I was thinking along the same lines as jim. Using your definitions you cannot create an infinite monotone subsequence from a sequence of one repeated number.

14. ## Killville - The ultimate Survivor game

Looking back at your answer posts I always enjoy seeing the way people work out problems. That's one of the great things about being a teacher, seeing how people understand.

Edit:In red.

18. ## How do we respond?

I remember seeing a couple posts similar to this one some time back and thought I'd try my hand at one. Here is the situation: While scanning space for signs of life a group of scientists receive a series of messages the last of which requires a response. The messages are translated as follows: 12 % 10 = 8 4 % 6 = 4 9 % 7 = 6 11 % 13 = 6 5 % 15 = 2 14 % 16 = ___ What number do we need to respond with?

22. ## Giant Jelly

I know right? It seems quite odd and slightly unbelievable, but, as I'm sure you know, since the water makes up such a large portion of the total mass 1% less is a significant change.

25. ## Analyze this: A simple card game

Yay for over analyzing!
×

• #### Activity

• Riddles
×
• Create New...