self Maths Puzzle


Which of the following statements is not correct?

A. log10 10 = 1
B. log (2 + 3) = log (2 x 3)
C. log10 1 = 0
D. log (1 + 2 + 3) = log 1 + log 2 + log 3

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self Other Question

If 75 men can complete a piece of work in 20 days. How much longer will it take to complete the work by 50 men?
If log 2 = 0.3010 and log 3 = 0.4771, the value of log5 512 is:

A. 2.870 B. 2.967
C. 3.876 D. 3.912