Question

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

Answer 1

The answer is 48

Step-by-step explanation:

The algorithm of these question is

$\Rightarrow 1 \times 11 + 2 \times 5 = 21$

$\Rightarrow 2 \times \left (11 -3 \right ) + 3 \times \left (5+1  \right ) = 36$

$\Rightarrow 3 \times \left (8 -3 \right ) + 4 \times \left (6+1  \right ) = 43$

$\Rightarrow 4 \times \left (5 -3 \right ) + 5 \times \left (7+1  \right ) = 48$

Answer 2

Answer:9

Step-by-step explanation: