NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 1: Number System - Multiple Choice QuestionsQuestion 7
Class 7 - Mathematics - Unit 1: Number System - Multiple Choice Questions
Question. 7
On the following number line value ‘Zero’ is shown by the point
(a)
X
(b)
Y
(c)
Z
(d)
W
Detailed Answer with Explanation:
Step 1: On a number line, the middle point is called the origin.
( ext{Origin} = 0 )
Step 2: Numbers to the right of the origin are positive.
( +1, +2, +3, ldots )
Step 3: Numbers to the left of the origin are negative.
( -1, -2, -3, ldots )
Step 4: Find the point that is exactly at the origin.
( 0 ext{ is at the origin} )
Step 5: In the diagram, the point at the origin is Z.
( herefore 0 ext{ is shown by } Z )