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Express the following numbers in standard form:

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answer is B.

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Detailed Solution

Concept- To convert the decimal number into its standard form shift the decimal to just after one digit and write that shifting in terms of the power of

. Also, there is a trick if we move decimal from right to left the number of digits we’ll shift convert into the power of

as a positive number and from left to right power will be a negative number of digits shifted.
Given that,

It will be in standard form, we put the decimal after

.
For this we need to shift the decimal from right to left.
Number of digits in the present decimal place and the decimal for standard form are

i.e.,

It means the power of

will be

(positive number, shifted from right to left)
Therefore, the standard form of

.
Hence, the correct answer is option (2) .

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