| Author | Who is the cleverest of 'em all |
|---|
| sorry, I don't get it... |
2^2 = 2*2
2^3 = 2*2*2
2^4 = 2*2*2*2
etc.
This is exponentiation. |
| I see! thanks |
| 2*3^7 |
| multiply first or expo first? |
| expo first unless you write it out to 2*3*3*3*3*3*3*3 Then it doesn't matter what order you multiply in, but (2*3)^7 is not the same as 2*3^7. There are very few things you can do before exponents. |
| What is it's shorter name? |
| other than exponentiation? |
| for BrutalStrike: exponent multiplication :P |
Until Divit is searching for a new one, I suppose each of us can propose a problem (I hope Divit won't mind). So, for 100 gp:
Add and explain the next logic number in the sequence: 1, 7, 40, 85, ... (Hint: the number is one of the following 3: 190, 7480, 15625.) |
For the "bunny" question it states
How many bunnies are in this
The answer would be 1
Previously he said bunny, not bunnies, though I assume hat is not the answer looking for |
OK! Forget about the previous (too complex) and focus on this one:
Add and explain the next logic number in the sequence: 1, 6, 31, 156,... (Hint. The number is one of the following 3: 780, 781, 782).
I double the stake. |
| hard =( |
| Come on, don't give up! Try! :) |
| 781 (5^n - 1)/4. |
| Correct! It is called geometrical progression. Prize dispatched. :) |
| or binary number written with one only |
| I mean base 5, but forget it I get the prize! |
It was sum with i from 0 to (n-1) from (5^i) which is (5^n - 1)/(5 - 1) which is exactly your answer. :)
A new one (very simple). Add and explain the next logic number in the sequence: 7, 1, 8, 2, 8,... (Hint. The number is one of the following 3: 1, 3, 9). Stake: 100 gp. |
| 1 : decimal expansion of e |
