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Question

In a stack, there are $$5$$ books, each of thickness $$20mm$$ and $$5$$ paper sheets each of thickness $$0.016 mm$$. What is the total thickness of the stack.


A
1.0008×102 mm
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B
1.0008×103 mm
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C
1.0008×104 mm
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D
None o these
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Solution

The correct option is A $$1.0008\times {10}^{2}$$ mm

Given:

No. Of books = 5

Thickness of each book = 20 mm

No.of  paper sheets = 5

Thickness of each paper sheets = 0.016 mm

Total thickness of the stack= thickness of 5 books + thickness of 5 paper sheets

 = 5 × 20  + 5 x 0.016

 = 100 + 0.080

 = 100.08 mm

 The total thickness of the stack = 1.0008 x $$10 ^2 $$ mm 


Mathematics

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