UPSC Government Jobs Exams

Six persons is a meeting, shake hands with each other. How many handshakes were interchanged?

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UPSC Other Question

How many 6's are there in 89873686398654868538 the following series which are not immediately followed by 3 but immediately preceded by 8?

Lata was facing the east. She turnned right and walked 20 meter, then turned to her right again and walked 20 meter. She then turned 45 degree towards her left and went straight to cover 35 meter. In which direction from her starting point is she?