The sum of the numbers \(436.32,227.2,\) and \(0.301\) in the appropriate significant figures is:

1. \( 663.821 \) 2. \( 664 \)
3. \( 663.8 \) 4. \(663.82\)
Subtopic:  Significant Figures |
 64%
Level 2: 60%+
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The mass and volume of a body are \(4.237~\text{g }\) and \(2.5~\text{cm}^3,\) respectively. The density of the material of the body in correct significant figures will be:
1. \(1.6048~\text{g cm}^{-3}\)
2. \(1.69~\text{g cm}^{-3}\)
3. \(1.7~\text{g cm}^{-3}\)
4. \(1.695~\text{g cm}^{-3}\)

Subtopic:  Significant Figures |
 82%
Level 1: 80%+
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The numbers \(2.745\) and \(2.735\) on rounding off to \(3\) significant figures will give respectively, 

1. \(2.75\) and \(2.74\) 2. \(2.74\) and \(2.73\)
3. \(2.75\) and \(2.73\) 4. \(2.74\) and \(2.74\)
Subtopic:  Significant Figures |
 67%
Level 2: 60%+
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The length and breadth of a rectangular sheet are \(16.2\) cm and \(10.1\) cm, respectively. The area of the sheet in appropriate significant figures and error would be, respectively,

1. \(164\pm3~\text{cm}^2\) 2. \(163.62\pm2.6~\text{cm}^2\)
3. \(163.6\pm2.6~\text{cm}^2\) 4. \(163.62\pm3~\text{cm}^2\)
Subtopic:  Errors | Significant Figures |
 63%
Level 2: 60%+
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