Maths is a favourite amongst professors but for those who do not posses the accumen, it can become a real horror story. So the only resolution out of this scary part is practice.
Voraciously reading the newspaper and other reading passages can help improve your awareness and general quality of your answers.
Common sense is in common parlance not so common. So solving questions of this category will help develop a sense to solve questions of this nature.
Lastly, practice makes perfect. So the thing to do is to take a lot of mock tests to develop a sense of timing. This would be to your added advantage. For this I would recommend you to download the prepguru app developed by youth4work.
For more info check our youtube video -
https://youtu.be/WmbfDfv23Vk