Very smooth interview process. Just prepare your CV thoroughly. Practice on some Guesstimates and Brain Teasers. Rest be yourself, answer everything calmly and you will excel in the interview for sure.

They will analyze your communication skills along with a few guesstimate questions. Proficiency in communication is the key; although combining all the factors, it is not difficult. Mathematical questions are also asked in which percentage questions are important. And knowledge of research (primary and secondary) is a must, along with an understanding of reliable sources for Secondary Research.