help regarding ashish agarwal sir

https://preview.redd.it/vnam3b3bcz6e1.png?width=225&format=png&auto=webp&s=124af364f59c2b5ac127ee533ee68ecf481ccb2d bhailog ashish sir ke ktk, tah, asrq ke questions ka source pata hai ki konse module/ book se ye questions lete hain? ya iski koi compilation?