Question

1+2=21
2+3=36
3+4=43
4+5=?

Answer 1

Answer:

58

Step-by-step explanation:

1+2=21

2+3=36

3+4=43

4+5=58

Answer 2

The missing number is equal to 58.

Step-by-step explanation:

We have,

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

To find, the value of 4 + 5 = ?

The pattern follow:

Reverse numbers, Reverse numbers + 4, Reverse numbers, Reverse numbers + 4, .....

1 + 2 ⇒ Reverse number 2,1 = 21

2 + 3 ⇒ Reverse number + 4 =  32 + 4 = 36

3 + 4 ⇒ Reverse number 4, 3 = 43

Similarly,

? = 4 + 5 ⇒ Reverse number + 4 =  54 + 4 = 58

∴ The missing number = 58

Thus, the missing number is equal to 58.