trial and error method in problem solving

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1. Solved 2. A trial-and-error method of problem solving used

   

2. Solved 2. A trial-and-error method of problem solving used

   

3. Solved 2. A trial-and-error method of problem solving used

   

4. Trial and Error Method

   

5. Problem solving trial and error (fantastic for greater depth!)

   

6. Problem solving trial and error (fantastic for greater depth!)