Question

Select all the correct answers.
What is 221,000,000,000,000,000,000 expressed in scientific notation?


a. 2.21 × 1021
b. 2.21E20
c. 2.21E21
d. 2.21E-20
e. 2.21 × 10-21
f. 2.21 × 10-20
g. 2.21 × 1020
h. 2.21E-21

Answer 1

Answer:

2.21*10²⁰

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