Aspire Faculty ID #15205 · Topic: JAMIA MCA 2017 · Just now
JAMIA MCA 2017

If $(780)_{10} = (1056)_{x}$, then $x$ is equal to

Solution

$(1056)_x = x^3 + 5x + 6$. So, $x^3 + 5x + 6 = 780 \Rightarrow x = 9$.
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