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Ans 1: (Master Answer)
Class : Class 1
(B)
There are 21 chairs in a classroom.
1 chair = 4 legs
21 chairs = 4 x 21 = 84 legs
So, the total number of legs of the chairs in the classroom is 84.
The correct answer is Option B.
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The following number line shows the temperature in degree Celsius (°C) at different places on a particular day. Find P, Q and R.
(i) The temperature difference between the hottest and the coldest places is __P__.
(ii) The temperature difference between Yamuna Nagar and Pathankot is __Q__.
(iii) The temperature difference between Pathankot and Kashmir is ___R__.
| P | Q | R | |
| A | 31°C | 8°C | 5°C |
| B | 30°C | 18°C | 6°C |
| C | 31°C | 18°C | 6°C |
| D | 30°C | 7°C | 8°C |
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