TCS Company Logical Reasoning Coding Decoding

One person has no siblings and says.” The guy in the photo is the only son of my father’s
son”, what is the relation of the guy to the person?

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TCS Other Question

5 persons standing in queue with different age group two years ago their average age will
be X and 6th person joined with them; hence the current average age has become Y. Find the
age of seventh person?
On the planet Oz, there are 8 days in a week - Sunday to Saturday and another day called Oz day. There are 36 hours in a day and each hour has 90 minutes while each minute has 60 seconds. As on earth, the hour hand covers the dial twice every day. Find the approximate angle between the hands of a clock on Oz when the time is 12:40 am.
O 111 degrees O 251 degrees
O 71 degrees O 89 degrees