Question

1+2=21
2+3=36
3+4=43
4+5=?​

Answer 1

Step-by-step explanation:

the correct answer according to me is 56

Answer 2

Answer is

400

Step-by-step explanation:

placing 1 and 2 in reverse order is giving 21.

second step, for 36, 2 and 3 on multiplication gives 6 and squaring 6 gives 36.

Third step, placing 3 and 4 in reverse order is giving 43.

So the II step at fourth step gives us, 4 x 5 = 20, squaring 20 gives 400.