Explanation : Leonhard Euler was one of the most prolific mathematicians in history, publishing over 800 papers throughout his lifetime. He revolutionized mathematics by creating much of the notation we use today, including e, i, f(x), and the summation symbol. His most famous contribution is Euler's identity, e^ (int) 1 = 0, often called the most beautiful equation in mathematics as it connects five fundamental constants. He also made groundbreaking work in calculus, number theory, graph theory

BEAUTIFUL DESTINATIONS on Instagram: "You don’t know it yet, but these trips stay with you. 🇹🇼 Taiwan (@___nihao) Night markets that run late, misty mountain railways, and cities that never feel one note. 🇦🇱 Northern Albania (@bengwashburn) Rugged alpine hikes, stone villages, and long stretches where it’s just you and the landscape. 🇴🇲 Oman (@maglovesprettythings) Desert dunes, turquoise wadis, and the kind of contrast that resets your sense of scale. 🇬🇪 Georgia (@chereneo) Food, wine,