10Under Your Sleeves

Source: Link

This might be old school but this can still work. Wake up early on the day of the exam and after you take a bath, write the answers on your arms. Wear a long-sleeved shirt to conceal your arms. Just roll the sleeves up if you need to check on the answers. Click the next ARROW to see the next image!

Previous article10 of the Most Dangerous Cities on Earth
Next article10 Best Places to Spot a Mythical Creature