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Mathematics Past Questions and Answers

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Waec Mathematics Questions

Question 726:

Which of the following correctly expresses 48 as a product of prime factors?

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A 3 x 4 x 4
B 2 x 3 x 8
C 2 x 2 x 2 x 3 x 4
D 2 x 2 x 2 x 2 x 3

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Question 727:

Which of the following correctly expresses 48 as a product of prime factors?

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A 3 x 4 x 4
B 2 x 3 x 8
C 2 x 2 x 2 x 3 x 4
D 2 x 2 x 2 x 2 x 3

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Question 728:

Evaluate \((20_{three})^2 - (11_{three})^2\) in base three

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A 101
B 121
C 202
D 2020

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Question 729:

Evaluate \(log_{10}5 + log_{10}20\)

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A 2
B 3
C 4
D 5

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Question 730:

In a class of 80 students, every students studies Economics or Geography or both. If 65 students study Economics and 50 study Geography, how many study both subjects?

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A 15
B 30
C 35
D 45

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