Hear im tryed to give answer of some questions 
In the form of ppt
![IMG_20190512_191704.jpg](https://cdn.steemitimages.com/DQmZuUecNZujKYAhXkZKHyMFndHcnDpvF5atZdqVMCNBgEz/IMG_20190512_191704.jpg)![IMG_20190512_191646.jpg](https://cdn.steemitimages.com/DQmSpVuoVVE3bPx5E4U5j24eLcXcYbQ33vs56TSmrmBrpen/IMG_20190512_191646.jpg)![IMG_20190512_191630.jpg](https://cdn.steemitimages.com/DQmbE3wbi6K1Z7fW1YvuXfpzFvGkXf57yBrhK2tLvsaqUa2/IMG_20190512_191630.jpg)![IMG_20190512_191616.jpg](https://cdn.steemitimages.com/DQmNNgswqXTg36iCiUKwWBe6Aw7uwp7PcYXCtLYrAc3oks9/IMG_20190512_191616.jpg)![IMG_20190512_191603.jpg](https://cdn.steemitimages.com/DQmXsoYvDr4S52UREnrbFo2aV19RYkokheWZrXar6DS6FtX/IMG_20190512_191603.jpg)![IMG_20190512_191548.jpg](https://cdn.steemitimages.com/DQmNb6dqgnTxJ8t7yP9xvsRBKfzKzFvAS8PbnGNZVyDy8Fy/IMG_20190512_191548.jpg)![IMG_20190512_191530.jpg](https://cdn.steemitimages.com/DQmNQr32K3JsL64k6ZekSNtsiLNbF3k94j31QwJHuiuBg1N/IMG_20190512_191530.jpg)![IMG_20190512_191511.jpg](https://cdn.steemitimages.com/DQmVJXuckLJntbzrDP1GVcSxaqUvq2ZsDGAaaLgemLsHrVR/IMG_20190512_191511.jpg)![IMG_20190512_191454.jpg](https://cdn.steemitimages.com/DQmXmGBibF7q48n3sKGTyc8tSVxPvWePnUVdZrmcSfTYa3F/IMG_20190512_191454.jpg)