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Q
QuestionMathematics

The number 20.35784 rounded to four decimal places is A. 20.3579 B. 20.3578 C. 20.35 D. 20.36
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Answer

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Step 1:
I'll solve this rounding problem step by step, following the specified LaTeX formatting guidelines:

Step 2:
: Understand Rounding Rules

When rounding to a specific number of decimal places, we look at the digit immediately to the right of the desired decimal place. If this digit is 5 or greater, we round up. If it's less than 5, we round down.

Step 3:
: Identify the Fourth Decimal Place

In the number $$20.35784$$, the fourth decimal place is $$8$$.

Step 4:
: Examine the Fifth Decimal Place

The fifth decimal place is $$4$$.
Since 4 is less than 5, we round down.

Step 5:
: Round the Number

Rounding $$20.35784$$ to four decimal places gives $$20.3578$$.

Step 6:
: Check the Given Options

Comparing our result to the options, we see that $$20.3578$$ corresponds to option B.

Final Answer

B. 20.3578