Question

Arrange the following in ascending order.

$i.21\times (-34)\times (-12)$

$ii.(7\times 8)-9$

$iii.7\times (8-9)$

$iv.21\times (-34)\times \left(12\right)$

• A. i < ii < iii < iv
• B. ii < iii < i < iv
• C. iv < i < iii < ii
• D. iv < iii < ii < i

Answer 1

The correct option is D

iv < iii < ii < i

$21\times (-34)\times (-12)=8568$

$(7\times 8)-9=47$

$7\times (8-9)=-7$

$21\times (-34)\times \left(12\right)=-8568$

Therefore,

-8568 < -7 < 47 < 8568