<h3>Find the prime factorization of 120</h3><h3>120 = 2 × 2 × 2 × 3 × 5</h3><h3>Find the prime factorization of 150</h3><h3>150 = 2 × 3 × 5 × 5</h3><h3>To find the HCF, multiply all the prime factors common to both numbers:</h3><h3>Therefore, HCF = 2 × 3 × 5</h3><h3>HCF = 30</h3><h3>The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).</h3>