TCS Company Numerical Ability Sequence and Series

4,8,48,2208,???

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2 members belong to all the three3 members belong to A&B3 members belong to B&C3 members belong to C& Aminimum possible number of members in any three.15)There are 3 numbers x,y,z the mean is m median is 5m is 10 more than the smallest number and 15 less than the biggest number.what is x+y+z16)There are 5 men and 11 women. How many ways can a panel of 11 be formed such that the number of men is not more than 3.17)Y-W-U-S-Q is coded as 25-23-21-19-17what is S-F-A-Y-T coded as.18) After 6 years Raju's fathers age will twice of the Raju's age 2 years ago.His mothers age was twice that of Raju's age. Sum of the age of their parents.19) Initial price =40,000. It reduces 3/4 of previous years price every year what is the price after 3 years.20)60 men work take 40 days to complete a work. Now suppose that is 60 men start working and every 5 days 5 people leave.In how many days will the work be complete.21)Then there was a series completion question.7^0,7^1 , 7^1+7^0,7^2 something like this but i was not able to solve it. I tried to ask my friends for the exact questions but wasn't able to get it, anyways some series question with include finding the missing values will come22)There was a triangle questions. There was a diagram of a triangle with multiple symmetric triangle inside And they asked us how to many triangles there were in total A gambler has in his pocket a fair coin and a two-headed coin. He withdraws a coin at random and
flips it twice. If the first flip is Heads, what is the probability that the second flip is Heads ?