Break out the calculators... again...

[Brian D]

1 + 4 = 5
2 + 5 = 12
3 + 6 = 21
5 + 8 = ?

 

[Kings Gambit]

1 + 4 = 5
2 + 5 = 12
3 + 6 = 21
5 + 8 = ?

I'd say 45.

 

[leo310]

34

 

[Brian D]

Ha! I see the West Coast guys are still up. Ain't it past your bed time? LOL

 

[Kings Gambit]

This may be putting me to sleep. No need for melatonin tonight.

 

[BigEasy]

Try 44

 

[Allan12210]

34. Now may I go to bed please?

 

[kappykaplan]

34

 

[Rick486]

40
Ignore second number in each equation. First number progresses.
5x1=5
6x2=12
7x3=21
8x5=40

 

[PAC3142]

I’m with kings gambit, 45.

 

[DaveJ]

34

 

[kloudie1]

34 .. a coupla bricks shy ..?

 

[Brezzin]

45

 

[PAC3142]

These two work for all examples:
A+B means AxB +A, or Ax(B+1)
final equation answer is 45
A+B means A+B, but each answer is in the next lower base, starting with base 6.
final equation answer is 111 (in base 3).

 

[justsomeguy]

34.
Add the result of the previous addition to the numbers you're adding in the next addition.
Works for me, anyway.

 

[DayDreamer41]

With incremental differentials of +2 the answer would result in 45

 

[JamesG161]

?=32

Just to confuse the others the next one in series is...

8 + 10 = 45

Jim...

PS: I did my calculations after morning coffee.

 

[Marc14857]

34.... 5+8 = 13 added to the previous total of 21 gets me to 34

 

[justsomeguy]

the next one in series is...

Um, what series?

 

[JamesG161]

Um, what series

So you want to be the "mascota del maestro"?

Hint: All columns are independent series.
Jim...