Six persons - A, B, C, D, E and F are sitting around a circular table. If A is facing B then who is to the immediate left of D? I. E is facing F who is to the immediate left of A. II. C is next to both A and E.
A :
if the question can be answered using statement I alone, but cannot be answered using statement II alone.
B :
if the question can be answered using statement II alone, but cannot be answered using statement I alone.
C :
if the question can be answered using both the statements together, but cannot be answered using any one statement alone.
D :
if the question cannot be answered using both the statements together.
Answer: C From Statement I: The position of D and C cannot be decided From Statement II: Only the position of A and B can be decided. Combining the two statements: The following arrangement can be concluded: AFDBEC (In clockwise direction) So, we can conclude that B is sitting to the immediate left of D.
Q. No. 122:
There are four friends Raja, Ram, Mohan and Roy. Among the four, who is the tallest friend? I. Raja is taller than Ram but shorter than Mohan. II. There are exactly two friends taller than Mohan.
A :
if the question can be answered using statement I alone, but cannot be answered using statement II alone.
B :
if the question can be answered using statement II alone, but cannot be answered using statement I alone.
C :
if the question can be answered using both the statements together, but cannot be answered using any one statement alone.
D :
if the question cannot be answered using both the statements together.
Answer: D From Statement I: Either Mohan (who is taller than both Raja and Ram) or Roy (about whom no information is given) is the tallest From Statement II: The tallest friend cannot be decided from statement II as its gives partial information. Combining the two statements: The statements do not go along with each other and hence cannot be combined.
Q. No. 123:
What is the speed of the boat in still water? I. The boat covers downstream a distance of 35 km in 5 hours II. The boat takes 7 hours to cover the same distance upstream.
A :
if the question can be answered using statement I alone, but cannot be answered using statement II alone.
B :
if the question can be answered using statement II alone, but cannot be answered using statement I alone.
C :
if the question can be answered using both the statements together, but cannot be answered using any one statement alone.
D :
if the question can be answered using either statement I or statement II alone.
Answer: C Using statement I: we can infer that B – R = 7 where B and R are the speeds of boat in still water and River respectively. But this information is not sufficient to find out the speed of the boat in still water. Hence, we cannot answer using statement I alone. Using statement II: we infer that 7 = D/(B + R) where D is the distance covered by the boat. Again we cannot answer the question using this information. Hence, statement II is not sufficient to answer the question. Combining II and I: we get B + R = 5 and B – R = 7. solving these equations we can find out the speed of the boat in still water.
Q. No. 124:
How many students are there in the class? I. The ratio of the number of boys to that of girls is 2:1 II. The difference between the numbers of boys and girls is 8.
A :
if the question can be answered using statement I alone, but cannot be answered using statement II alone.
B :
if the question can be answered using statement II alone, but cannot be answered using statement I alone.
C :
if the question can be answered using both the statements together, but cannot be answered using any one statement alone.
D :
if the question can be answered using either statement I or statement II alone.
Answer: C Combining both the statements, we get B : G = 2 : 1 and B – G = 8 where B and G are the number of boys and girls respectively. Using these two equations we can find the value of B and G separately and hence find out the number of students in the class which is B + G.
Q. No. 125:
What is the amount of profit earned? I. On selling the article for Rs.1740, 20% profit is earned. II. The cost price of the article is Rs 1200.
A :
if the question can be answered using statement I alone, but cannot be answered using statement II alone.
B :
if the question can be answered using statement II alone, but cannot be answered using statement I alone.
C :
if the question can be answered using both the statements together, but cannot be answered using any one statement alone.
D :
if the question can be answered using either statement I or statement II alone.
Answer: A Using statement I Amount of profit earned = Rs 290. Therefore, statement I alone is sufficient to answer the question. Using statement II: we cannot answer the question and therefore it is not sufficient to answer the question.
Q. No. 126:
Is a two-digit positive integer ‘b’ divisible by 18? I. When 3 divide ‘b’, the remainder is 2. II. When ‘b’ is multiplied by 3,we get the result in three digits
A :
if the question can be answered using statement I alone, but cannot be answered using statement II alone.
B :
if the question can be answered using statement II alone, but cannot be answered using statement I alone.
C :
if the question can be answered using both the statements together, but cannot be answered using any one statement alone.
D :
if the question can be answered using either statement I or statement II alone.
Answer: A we can say that if a number ’k’ is not divisible by 3,it will also be not divisible by 18.Therefore, statement I alone is sufficient to answer the question. We cannot answer the question using statement II..