The difference between a formal and informal proofL

When you give reasons that something is true, but don’t necessarily lay it out step-by-step, this is an informal proof. A formal proof, on the other hand, shows step-by-step statements with reasons given for each step.

True or False?

I think it is true.

Question

The difference between a formal and informal proofL
 
When you give reasons that something is true, but don’t necessarily lay it out step-by-step, this is an informal proof. A formal proof, on the other hand, shows step-by-step statements with reasons given for each step.

True or False?

I think it is true.

anonymous · Answer

Will give medal this time.

miracrown · Answer

I personally think that the statement is true as well. You always need statements and justifications to create a formal proof anything less would be informal.