Question 1: 👨👨👦👦 If 5 of the miners stop mining, will the mining work and reward of the remaining 5 people 🚀 double/Increase?📈
YES, income increases because competition goes down, the total network hashrate decreases, and your share of the network becomes larger; for example, with 10 miners you have a 10% chance to find a block, but if only 5 miners remain your chance increases to 20%, meaning you find blocks roughly twice as often. However, an important nuance is that Bitcoin automatically adjusts its difficulty: when fewer miners are active, the difficulty decreases so that blocks are still produced approximately every 10 minutes, which means that while income per miner does increase, it does not happen instantly due to this adjustment period.
Question 2: 👨👨👦👦👨👨👦👦 If 10 more miners join those 10 miners (total 20 miners) will their mining income and everyone's mining activity 📉 decrease?
YES, income decreases because competition increases, the total network hashrate goes up, and your share of the network becomes smaller. For example, with 10 miners you have a 10% chance to find a block, but if the number of miners grows to 20, your chance drops to 5%, meaning you find blocks less often and your income declines. Another important nuance is that difficulty also increases, while blocks are still produced roughly every 10 minutes, so the total BTC issuance does not change — it is simply distributed among more participants on a probabilistic basis.