Question

The combination for a lock is a 3-digit number. The digits are the prime factors of 42 listed from least to greatest. What is the combination. What is the combination for lock

Answer 1

2, 3, 7

Explanation:

Since you know your multiplication tables, you know that ...

42 = 6 × 7

and

6 = 2 × 3

The numbers 2, 3, and 7 are prime numbers (not further divisible). This list is in order least to greatest, so is the combination of the lock.