JSFiddle - React, Tailwind, and code Playground

JavaScript

const data = [
  [5, 3],
  [2, 8],
  [100, 15],
  [24, 34],
  [67, 456],
  [234, 245],
  [3, 78],
  [76, 34],
  [34, 96],
]

let minimals = data.map(pair => Math.min(...pair))

document.body.textContent = minimals.join(' ')