Only Engineers Can Solve This Puzzle. Try if you can.

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

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Answer

44
(5 x 8) + 4

#### 18 comments:

1. How to get 44, 1+4=5 4×1=4+1=5,2+5=12 2×5=10+2=12,3+6=21 3×6=18+3=21,missing 4+7=32 7×4=28+4=32, 8+5=45 8×5=40+5=45

1. You guys are overthinking this series! Where are you assuming multiplication is a valid operator, whereby you're constructing your answer by such use?
This is a simple additive series as follows: 1+4=5; 2+5=7+previous answer of 5=12; 3+6=9+previous answer of 12=21; and, 5+8=13+previous answer of 21=34.

2. 45

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3. 45
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1. 34 is correct! This is an addition problem - there are no references to using multiplication as the respective operator. To get 45 as an answer, you are assuming you can CHANGE the operator from "+" to "x" which is a different series operation altogether.

4. 45 is correct

5. 1+4=5;2+5=7+5=12;3+6=9+12=21;5+8=13+21=34

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