Question

If 1+2=21,2+3=36,3+4=43then4+5=?

Answer 1

Answer:

I guess it's 520.

it's double series :

1+2=21, 3+4=43

2+3=36, 4+5=520

write the 2nd no. first , like in 1+2, v'll write 2, same way

4+5, 1st write 5 as it is then multiplication of the two digits (4×5)

and multiplication to every even term i.e 2 and 4

so in 4+5=5(2nd digit)20(4×5), as in

2+3=3(2nd digit)6(2×3)!!

HOPE IT'S TRUE!!