CTS Company Logical Reasoning Coding Decoding

A secret can be told only 2 persons in 5
minutes .the same person tells to 2 more persons
and so on . How long will take to tell it to 768
persons ?
a)47.5 min b)50 min c) 500 min d)49 min

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CTS Other Question

Write a short code using C++ to print out all odd number from 1 to 100 using a for loop A son and father goes for boating in river
upstream . After rowing for 1 mile son notices the
hat of his father falling in the river. After 5 min.
he tells his father that his hat has fallen. So they
turn round and are able to pick the hat at the
point from where they began boating after 5min.
Tell the speed of river?