Determine the number of three digits number N divisibly by 11, and N/11 is equal to the sum of squares of the digits of N
Correct Answer : B
In a class, every boy is friends with exactly four girls and every girl is friends with exactly three boys. lt is known that there are only 17 desks in the classroom, each of which can hold not more than four students. If there are 59 students in the class who Study German, find the number of students in the class.
In the above question, what could be the minimum possible number of questions prepared?
A traveler, on his way to a certain village A, reaches a road junction, where he can turn left or right.He knows that only one of the two roads leads to village A, but unfortunately, he does not knowwhich one. Fortunately, he sees two twin-brothers standing at the road junction, and he decides toask them for directions.
The traveler knows that one of the two brothers always tells the truth and the other one always lies.Unfortunately, he does not know which one always tells the truth and which one always lies.With which of the following questions can the traveler find out the way to village A by asking justthis one question to one of the two brothers?