Hi Sachin,
It's great that you're looking for ways to improve. After a quick search online, I've found a couple of resources that might be helpful:
- Assessment Day has some free practice tests, along with a paid option. In my experience, these questions are very similar to the questions asked by the firms I applied to.
- Job Test Prep also has some free practice questions, which could supplement the ones from Assessment Day, and they have a paid option, too.
Both Assessment Day and Job Test Prep have practice and preparation tips, which I also found helpful. You can definitely use these sites to build your confidence going into the test.
I also want to highlight that I do not think it is necessary to buy verbal and numerical reasoning practice packages in order to do well in these tests.
Aside from these resources, I would recommend brushing up on your basic arithmetic skills, e.g. addition, subtraction, multiplication, division, averages, ratios, percentages, and reading graphs.
My top tip for verbal reasoning tests would be to ensure that you are reading the text carefully and avoid jumping to any conclusions. Make sure you answer exactly what the question is asking. Choose your answer based on the text, rather than basing it on any assumptions you might have unintentionally made along the way. When reading the text, look for any key words and watch out for subtle differences in phrases, e.g. replacing the word "must" with "should" can change the meaning of a sentence.
Finally, make sure to manage your time when completing the test. If the test is time-capped, do not spend too long on each question. If you are struggling to find the answer, move on to the next question and come back if you have time.