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Given,
⇒ 3 + log5 5-2
⇒ 3 + (-2log5 5)
⇒ 3 + (-2 × 1)
⇒ 3 - 2
⇒ 1.
Hence, Option 1 is the correct option.
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If loga m = n, express an - 1 in terms of a and m.
Given log2 x = m and log5 y = n.
(i) Express 2m - 3 in terms of x.
(ii) Express 53n + 2 in terms of y.
The value of log5 75 - log5 3 is :
72
2
25
5