There are N secret agents each know a different piece of
secret information. They can telephone each other and
exchange all the information they know. After the telephone
call, they both know anything that either of them knew
before the call.
What are the minimum number of telephone calls needed so
that all of the them know everything?
Silu and Meenu were walking on the road.
Silu said, "I weigh 51 Kgs. How much do you weigh?"
Meenu replied that she wouldn't reveal her weight directly
as she is overweight. But she said, "I weigh 29 Kgs plus
half of my weight."
How much does Meenu weigh?
there are 5 boxes each of which contains coins. all the
boxes except one box contains coins whose weight is 100
grams.(each coin weight is 100gm). only one box contains
coins tat weigh 90gm each. u r given a digital balance. in
how many trys can u find out which box contains 90gm coins?
An anthropologist discovers an isolated tribe whose written
alphabet contains only six letters (call the letters A, B,
C, D, E and F). The tribe has a taboo against using the same
letter twice in the same word. It's never done.
If each different sequence of letters constitues a different
word in the language, what is the maximum number of
six-letter words that the language can employ?