У вашего броузера проблема в совместимости с HTML5
This video will provide you best approach to solve questions. This video will also help you to understand level of SSC CGL TIER 1 EXAM.
SSC CGL TIER 1 2017 MATHS SOIUTION- 8 AUGUST 2017 MORNING SHIFT- https://youtu.be/12imwPKsFSc