Simplufy Log 10 4 + Log 10 25

MATHEMATICS

WAEC 1996

Simplufy Log₁₀4 + Log₁₀25

A. 1
B. 2
C. 3
D. 4

Correct Answer: B. 2

Explanation

Log₁₀4 + Log₁₀25 = Log₁₀(4 x 25)

= Log₁₀100 = Log₁₀10²

= 2Log₁₀10 = 2 x 1 = 2

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