Question

Consider a building with $20$ stairs above ground level and $20$ stairs below ground level. Considering the ground level as zero, if you are standing at the $6^{\text{th}}$ step below the ground level, how will you represent it?​

• A. $+6$
• B. $-6$
• C. $-4$
• D. $+4$

Answer 1

The correct option is B $-6$

Assume the stairs to be a number line and ground level as zero. ​
The stairs above ground level are considered positive and the stairs below the ground level are considered negative. ​
So, if you are standing at the $6^{\text{th}}$ step below the ground, it can be represented as $-6$.​