Answer is 0

2+3+4=24=====2x4x3=24 5+2+1=10=====5x1x2=10 4+1+5=20=====4x5x1=20

then1+5+0====1x0x5=0

1) 2x3x4= 24 2) 5x2x1= 10 3) 4x1x5= 20 4) 1x5x0= 0

so answer will be 0

0 Multiplication of addends=sum

If 5 + 4 => 9 3 + 5 => 9 9 + 1 => 9 1 + 6 => 8 4 + 2 => 8 1 + 7 => 7 5 + 6 => 6 3 + 7 => 3 7 + 0 => 0 Then 8 – 1 => ??

If 1 2 3 = 4 5 2 3 3 = 6 4 3 2 1 = 3 9 8 4 0 = 7 2

Then 1 1 1 = ? ?