It depends, I would recommend to ask you HR to be 100% sure.
- Below some tips on how you can prepare:
McKinsey PST is pretty hard, so I recommend starting and tracking your prep using PST materials. If you have good results with PST, other tests are not a problem. For this you can:
• Buy Viktor Cheng test prep program - the best materials I've seen so far.
• Practice your math.
Do the 2nd test and check the score
Also, you can find a good number of PST test online