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Question

Akash asked Pavan to find the value of 9999×(555). He says that it will be difficult to multiply as both of them are big numbers. Akash says that there is a simple way to find the product. He solves the problem using the concept of brackets. Which of the following will be the easiest way to solve this?



A
9999×(555)=9999×(500+5)
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B
9999×(555)=(9000+999)×(500+5)
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C
9999×(555)=(100001)×(500+5)
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D
9999×(555)=(100001)×(555)
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Solution

The correct option is D 9999×(555)=(100001)×(555)

As 9999 is nothing but (10000 - 1) and it's very easy to multiply any number with a multiple of 10.

Easiest way  to solve 9999 × 555 will be (100001)×(555).


Mathematics

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