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JAMB Mathematics 2010 Objective — Question 10

Question 10 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2010 Objective paper, with the correct answer and a full explanation.

10. Express the product of 0.21 and 0.34 in standard form. A. 7.14x10^-4 B. 7.14x10^-3 C. 7.14x10^-2 D. 7.14x10^-1

A. 7.14x10^-4
B. 7.14x10^-3
C. 7.14x10^-2Correct
D. 7.14x10^-1

Explanation

0.21 x 0.34 = (2.1x10^-1) x (3.4x10^-1) = 7.14x10^-2.

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