What is the value of a, if loga 4 + loga 16 + loga 64 + loga 256 = 10?
Correct answer: A
The given expression is:
loga (4 × 16 × 64 × 256) = 10
i.e. loga 410 = 10 10 loga 4 = 10
loga 4 = 1
Thus, a = 4
Number system — Question 5
SSC CGL · Quantitative Aptitude
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