A question is followed by two statements A and B. Mark [1] if statement A alone is sufficient to answer the question.
Mark [2] if statement B alone is sufficient to answer the question.
Mark [3] if statement A and B are together required to answer the question.
Mark [4] if both statements A and B together are also not sufficient to answer the question.
Mark [5] if either statement A or B are required to answer the question.
Question
Is n odd ?
A. an – bn is divisible by a – b
B. an + bn is not divisible by a + b
a. 1
b. 2
c. 3
d. 4
e. 5
Answer: 2
Feedback:
A) an –bn is divisible by a – b for all values of n.
B) an + bn is divisible by a + b only for the odd values of n.
What is the average weight of the class?
A. The ratio of the average weight of all the boys and girls is 3:2
B. The number of boys and girls in the class are 40 and 60 respectively
a. 1
b. 2
c. 3
d. 4
e. 5
Answer: 4
Feedback:
Both the statements together & either statement alone is not sufficient to give a unique solution
