Which of the following represents the prime factorisation of 60?
2 x 2 x 3 x 5
Prime factorisation is expressing a number as the product of its prime factors.
60 = 2 x 30
= 2 x 2 x 15
= 2 x 2 x 3 x 5
(2, 3 and 5 are prime numbers)
Hence, the prime factorisation of 60 is 2 x 2 x 3 x 5.