Mathematics
Grade10
Easy

Question

Find the prime number that is a factor of 42.

  1. 6    
  2. 14    
  3. 3    
  4. 4    

hintHint:

Factor of a number is a number that divides the number completely without leaving a remainder. And a prime factor is a factor of the number that is not divisible by any other number except for itself and 1.

The correct answer is: 3


    Step by step solution:
    42 = 1 x 42 = 2 x 21 = 3 x 14 = 6 x 7
    The factors of 42 are 1, 2, 3, 6, 7, 14, 21 and 42.
    The prime factors are 2, 3, and 7.
    Thus, from the given options 3 is the answer.
    Hence, option(c) is the correct option

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