Which of the Following Numbers Are Correctly Expressed in Ordinary

question 21

Multiple Choice

Which of the following numbers are correctly expressed in ordinary decimal form?
(i) 6.21 * 10⁵ = 621,000
(ii) 7.28 * 10⁶ = 0.00000728
(iii) 9.03 * 10^-4 = 0.000903
(iv) 1.12 *10^-3 = 1120

• A)i and ii
• B)i and iii
• C)ii and iv
• D)iii and iv
• E)All are incorrect

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Definitions:

Interest Rate

The rate at which a borrower is charged interest for the money borrowed from a lender.

Cash Rebate

A partial refund to someone who has paid too much money for tax, rent, or a utility, or as a promotional incentive from the purchase of goods or services.

Effective Rate

The actual interest rate earned or paid on an investment, loan, or savings account, taking into account the effect of compounding.

Annuitant

The individual who receives the benefits or payments from an annuity plan.