Question

Lv.11
Please write down the correct
answer
1 + 2 = 21
2 + 3 = 36
3 + 4 = 43
4 + 5 =
?
​

Answer 1

Step-by-step explanation:

1+2=21

2+3=36

3+4=43

4+5=520

because 1. two and one

2. 3and two * 3 =6

vice versa

Answer 2

Answer:

One solution is

1 + 2 = 21 + 0 = 21

2 + 3 = 32 + 4 = 36

3 + 4 = 43 + 0 = 43

4 + 5= 54 + 4 = 58

second solution is

1 + 2 = 12 + 9 = 21

2 + 3 = 23 + 13 = 36

3 + 4 = 34 + 9 = 43

4 + 5 = 45 +13 = 58