If a and b are two numbers such that a b=0, then · ABC26GN0084

Subject: General Aptitude · Chapter: Number System · Exam: R.R.B. 2006

If $a$ and $b$ are two numbers such that $a b=0$, then

(a)$a=0$ and $b=0$

(b)$a=0$ or $b=0$ or both

(c)$a=0$ and $b \neq 0$

(d)$b=0$ and $a \neq 0$

Answer

Answer (as printed): B

Explanation

$a b=0 \Rightarrow a=0$ or $b=0$ or both are zero.

Explanation as extracted from the printed page; notation may be imperfect.

Study loop for Number System