Lee made a conjecture that any number ending in 3 will be divisible by 3. Which of the following best describes whether or not the conjecture is reasonable?

Question

anonymous · Answer

A. Yes, it is reasonable because 33, 63, and 93 are all divisible by 3.	
B. Yes, it is reasonable because a number that ends in 3 will always be odd.	
C.No, it is not reasonable because 13 is not divisible by 3.	
D.No, it is not reasonable because 6, 9, and 12 do not end in 3.

anonymous · Answer

For any number to be divisible by 3, all integers of the number have to add up to a multiple of 3.
For example 81 is divisible by 3 because 8+1=9

anonymous · Answer

so wat letter

anonymous · Answer

C. Its a contradiction.

anonymous · Answer

so, 3 is not divisible by 3?

directrix · Answer

3 is divisible by 3 but 13 is not. Divisible in this context means the remainder is 0. I am interpreting "reasonable" to mean "true."

C. No, it is not reasonable because 13 is not divisible by 3.

anonymous · Answer

thx

anonymous · Answer

It has to hold for ALL cases, not just 1.