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Which of these numbers is correctly written in scientific notation? 10.5x10⁹ 5x10⁴ 1.234x10¹¹ 1234x10-³

Answer :

Scientific notation is written in the form;

[tex]a\times10^n[/tex]

where;

a - is a real number whose absolute value is between 1 and 10.

[tex]1\leq a<10[/tex]

And n is the power/ exponent(an integer).

The correct scientific notation from the options that follows the stated rule is;

[tex]1.234\times10^{11}[/tex]

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