Question

if 1+2=21 2+3=36 3+4=43 then 4+5=?​

Answer 1

Answer:

4+5=9

Step-by-step explanation:

hope it's help...

Answer 2

The missing number is "58".

Step-by-step explanation:

We have,

1 + 2 = 21, 2 + 3 = 36 and 3 + 4 = 43

To find, the value of  4 + 5 = ?

The pattern follow,

(Reverse digit), (Reverse digit) + 4, (Reverse digit), (Reverse digit) + 4, ...

1 + 2 = 2,1 ⇒ 21

2 + 3 = 3,2 + 4 = 32 + 4 = 36

3 + 4 = 4, 3⇒ 43

Similarly,

4 + 5 = 5,4 + 4= 54 + 4 = 58

Hence, the missing number is "58".