[IQ題] How young is your brain?

无奈的寂寞

1) observe the number for 1 second. Capture the numbers.( Y  W: I# V4 W! o) C2 A
7 E' R; m, ~2 r5 ~# E" Y& B
2) press the number in sequence.公仔箱論壇1 W" Y/ Y1 L4 G( |2 o4 F
  W5 o- d* R! _% X9 N
3) At the end of the questions, the Number shown is your age of thebrain.