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The thermometer shows the 6 a.m. temperatures of three places in Jammu and Kashmir and Ladakh. Each degree is cut into equal small parts. Which order is correct, from the coldest to the warmest?

Class 8Rational NumbersRational Numbers
  • AGulmarg, Leh, Kargil
  • BLeh, Kargil, Gulmarg
  • CKargil, Gulmarg, Leh
  • DKargil, Leh, Gulmarg

Step-by-Step Solution

Each mark is °C. Kargil , Leh , Gulmarg . Lower on the scale is colder: , so Kargil, Leh, Gulmarg.
Answer: D) Kargil, Leh, Gulmarg

Key idea: Rationals on the number line

Every rational has a unique location on the number line. To plot p/q:
- If q > 0 and p > 0, count p/q units to the right of 0.
- If p < 0, count to the left.
- For 5/4, divide each unit between 1 and 2 into 4 equal parts and pick the first one past 1.

Unlike integers (which leave gaps between consecutive values), rationals appear infinitely close to each other on the number line.

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