Which of the following is equal to 1?
20+30+40
20×30×40
(30–20)×40
(30–20)×(30+20)
Determine the equation that's valued is equal to 1.
For point A)
20+30+40=1+1+1;a0=1⇒=3
For point B)
20×30×40=1×1×1;a0=1⇒=1
For point C)
(30-20)×40=(1-1)×1;a0=1⇒=0×1⇒=0
For point D)
(30-20)×(30+20)=(1-1)×(1+1);a0=1⇒=0×2⇒=0
Hence, the correct choice is “Option B”.