The Gaussian Summation - Quant Trader Interview Question
Difficulty: Easy
Category: Mental Math & Estimation
Practice quant interview questions from top firms including Jane Street, Citadel, Two Sigma, DE Shaw, and other leading quantitative finance companies.
Topics: mental-math, arithmetic, series, gauss, interview-prep
Problem Description
This is a classic litmus test used in quantitative interviews to gauge mathematical literacy and historical awareness. Legend has it that Carl Friedrich Gauss solved this instantly in elementary school.
Calculate the sum of all integers from 1 to 100 (inclusive):
$$\sum_{i=1}^{100} i$$
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