Question

If a, b, c are rational numbers, then associativity of rational numbers under addition is given by

• A. $a+b=b+a$
• B. $a+(b+c)=(a+b)+c$
• C. $a\times (b\times c)=(a\times b)\times c$
• D. $a+(b-c)=(a+b)-c$

Answer 1

The correct option is B $a+(b+c)=(a+b)+c$

Associative property of rational number under addition is given by following:

$a+(b+c)=(a+b)+c$

where, $a,b$ and $c$ are rational numbers.

Hence, B is the correct option.