Open the door, take the elephant out, put the giraffe in, and close the door.
Open the door, take the elephant out, put the giraffe in, and close the door.
Education.
132
2 (+13), 15 (13+13), 41 (+13+13+13), 80, (+13+13+13+13) 132
Rooster.
$20
Consider the trade-story as if it describes two separate trades, where:
In the first trade, the man buys something for $60 and sells it again for $70, so he makes a profit of $10.
In the second trade, the man buys something for $80 and sells it again for $90, so he makes again a profit of $10.
Conclusion: The man makes an overall profit of $10 + $10 = $20.
You can also look at the problem as follows: the total expenses are $60 + $80 = $140 and the total earnings are $70 + $90 = $160. The overall profit is therefore $160 - $140 = $20.
A lion.
A penguin.
An elephant.
Moose.
We first look with which numbers each number can form a pair of which the sum is a square:
Number:
Number 1 Square pairs: 1+3
1+8
1+15
Number 2 Square pairs: 2+7
2+14
Number 3 Square pairs: 3+1
3+6
3+13
Number 4 Square pairs: 4+5
4+12
Number 5 Square pairs:
5+4
5+11
Number 6 Square pairs:: 6+3
6+10
Number 7 Square pairs: 7+2
7+9
Number 8 Square pairs: 8+1 Number 9 Square pairs: 9+7
9+16
Number 10 Square pairs: 10+6
10+15
Number 11 Square pairs: 11+5
11+14
Number 12 Square pairs:12+4
12+13
Number 13 Square pairs:13+3
13+12
Number 14 Square pairs:14+2
14+11
Number 15 Square pairs:15+1
15+10
Number 16 Square pairs:16+9
As can be seen, there are two numbers that can form a pair in only one way: 8 and 16. Therefore, these two numbers need to be at the start or at the end of the sequence. If we start with the number 16, the sequence follows almost automatically: 16 9 7 2 14 11 5 4 12 13 3 6 10 15 1 8. Of course, the reverse sequence is also a possible solution.
Fire.
A kiwi.