Question

#+#+#=15
#+@+@=23
#+@+&=25
#.@.&=?

Answer 1

# + # + # = 15
3# = 15
# = 15 ÷ 3
# = 5

# + @ + @ = 23
5 + @ + @ = 23
@ + @ = 23 - 5
2@ = 18
@ = 18 ÷ 2
@ = 9

# + @ + & = 25
5 + 9 + & = 25
14 + & = 25
& = 25 - 14
& = 11

Então:
# · @ · & = ?
5 · 9 · 11 = ?
45 · 11 = ?
495 = ?


Espero ter ajudado.
Bons estudos!  : )