NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 1: Number System - Multiple Choice Questions
Question 8

Question. 8

If ⊗, O, ⊙ and • represent some integers on the number line, then the descending order of these numbers is

(a)

•, ⊗, ⊙, O

(b)

⊗, •, ⊙, O

(c)

O, ⊙, ⊗, •

(d)

O, •, ⊗, ⊙

Step 1: On a number line, a point to the right stands for a greater number. A point to the left stands for a smaller number.

Step 2: For descending order, we list numbers from the biggest to the smallest. So we read the marked points from right to left.

Step 3: From the picture, the order of the marks from right to left is: O, ⊙, ⊗, •.

Step 4: Write the comparisons one by one:

( O > , ⊙ )

( ⊙ > , ⊗ )

( ⊗ > , ullet )

Step 5: Therefore, the descending order is:

O, ⊙, ⊗, •

This matches option (c).