check out the following strategies on Quant:
DS-Strategy:
DS Q' is a bit difficult in the sense that it requires a bit more time to solve when compared to a PS Q'. It requires a careful approach which deals a step by step elimination of the options.If one does not follow the process, there is a high chance of landing on a wrong choice.Weigh the two given statements independently to decide whether either one alone is enough to answer. If both the statements are not independently enough to solve the problem, then check whether both the statements together can do.
Silly Mistakes:
Don't be too fast while solving the problems. Even if you are strong in Quant section, go with a balanced approach. Be careful with the traps. More balance is required especially in dealing with DS problems as we are more prone to traps there.
All the best

Here are links to several articles from Brian Galvin the Director of academic programs at Veritas Prep and a couple of my articles as well. I think that these may just help you out!

https://www.beatthegmat.com/mba/2011/10/ ... ust-a-game

https://www.beatthegmat.com/mba/2011/08/ ... strategies

https://www.beatthegmat.com/mba/2011/07/ ... ufficiency

https://www.beatthegmat.com/mba/2012/02/ ... super-bowl

https://www.beatthegmat.com/mba/2012/01/ ... ufficiency