Identify the number classified as prime. Responses 89 89 - no response given 81 81 - no response given 87 87 - no response given 85

Answer 1

The prime number from the options provided is 89.

Here's the breakdown of the numbers:

• 89: Prime (Only divisible by 1 and 89)
• 81: Not prime (Divisible by 1, 3, 9, 27, 81)
• 87: Not prime (Divisible by 1, 3, 29, 87)
• 85: Not prime (Divisible by 1, 5, 17, 85)

Thus, 89 is the only prime number listed.