Delhi University MCA Number System Previous Year Questions (PYQs)
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Showing 3 questions
Given that $3^x$=656. The value of $5^{x-5}$ is ...
(a) 81
(b) 125
(c) 225
(d) 1/125
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Solution
If 2x = (1024)1/5, what is the value of x ?
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Solution
$2^x=1024^\frac{1}{5}$
$2^x=(2^{10})^{1/5}$
$2^x=2^{10/5}$
$2^x=2^2$
$x=2$
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