Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jan 7, 2018 14:08:37 GMT
1 + 4 = 5 2 + 5 = 12 3 + 6 = 21 8 + 11 = ?
There are two possible answers
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jan 7, 2018 16:16:56 GMT
I can only see one but maths are not my thing ,so .. when will you tell the answer Bryan?
|
|
|
Post by aubrey on Jan 7, 2018 17:35:03 GMT
I can only see one but maths are not my thing ,so .. when will you tell the answer Bryan? I don't get it at all. I probably wouldn't even if the answer was given, either of them.
|
|
|
Post by goldelox on Jan 8, 2018 9:19:24 GMT
I'm afraid not
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jan 8, 2018 9:29:41 GMT
I have just found the other possibility (maybe).
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jan 8, 2018 11:09:54 GMT
The two possible answers are 40 and 96
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jan 8, 2018 13:10:24 GMT
I got the obvious one 40 but my other one was 47 so completely wrong. Are you going to tell us how 96 is arrived at, please?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jan 8, 2018 15:27:41 GMT
Solution 1: Add the equation, then combine the sum to that of the previous equation.
Let's do this together.
First line: 1 + 4 = 5
Second line: 2 + 5 = 7. So add the first sum of the previous equation, like so: 5 + 7 = 12
Third line: 3 + 6= 9, so add 9 + 12 = 21.
Solution: 8 + 11 = 19, so add 19 + 21 = 40.
40 is a widely accepted and correct answer. However, it's not the only correct one.
Solution 2: Instead of just adding, this second solution involves multiplying the second number of the equation by the number you are adding to it.
First line: 1 + (4 x 1) = 5
Second line: 2 + (5 x 2) = 12
Third line: 3 + (6 x 3) = 21
Solution: 8 + (11 x 8) = 96
So either 40 or 96 are correct answers to this question.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jan 8, 2018 16:03:00 GMT
Thank you for the explanation. I obviously worked the first answer out but had not a clue how you arrived at 96. It must be nice to be able see solution like that or maybe there is a formula for such problems that you know. It is all a closed book to me.
|
|