Question

how many 2,s are in the prime factor of 300

Answer 1

300=2×2×3×5×5=(2^2)×3×(5^2)

In 300 there are two 2's

Answer 2

2    300
________
  2     150
_________
    3       75
__________
      5        25
___________
                   5

300 = 2² × 3 × 5

∴ there are two 2's in prime factor 300