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MATH / Let k be the smallest positive integer such that the binomial coefficient binom{10^9}{k} is less than the binomial coefficient binom{10^9 + 1}{k - 1}. Let a be the first (from the …

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problem

Let kk be the smallest positive integer such that the binomial coefficient $\binom{10^9}{k}$ is less than the binomial coefficient $\binom{10^9 + 1}{k - 1}$. Let aa be the first (from the left) digit of kk and let bb be the second (from the left) digit of kk. What is the value of 10a+b10a + b?
Plain-text mathematical notation (without MathML)
Let k be the smallest positive integer such that the binomial coefficient $\binom{10^9}{k}$ is less than the binomial coefficient $\binom{10^9 + 1}{k - 1}$.  Let a be the first (from the left) digit of k and let b be the second (from the left) digit of k.  What is the value of 10a+b?
Original LaTeX notation
Let $k$ be the smallest positive integer such that the binomial coefficient $\binom{10^9}{k}$ is less than the binomial coefficient $\binom{10^9 + 1}{k - 1}$.  Let $a$ be the first (from the left) digit of $k$ and let $b$ be the second (from the left) digit of $k$.  What is the value of $10a + b$?

level

Level 5

type

Intermediate Algebra

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