Question
How many female members are there in family of ten
members? Statement I: Z is only son of Y, who is son-in-law of B. W is only daughter of C. L is sister-in-law of P. B is brother-in-law of A, who is sister of C. X is brother of W. L is married to B. W is mother of P and is mother-in- law of L. Only three married couples are there in family. A and P unmarried members of the family. Statement II: L is son of Z and is son-in-law of X. W is only son of C, who is married to B. R is only son of Y. B is sister of A. P and R are siblings. L is brother-in-law of R. A and R are unmarried member of family. Y is brother-in-law of W. Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question:Solution
We have: X is brother of W and W is only daughter of C. B is brother-in-law of A, who is sister of C, as A is unmarried member of family, that means B is married to C. Based on above given information we have: 
Clearly, only five female member are there in the family. Hence, statement I is alone sufficient. From Statement II:We have:  L is son of Z and is son-in-law of X. L is brother-in-law of R, as R is unmarried member of the family. P and R are siblings. R is only son of Y, that means X is married to Y and P is married to L. Y is brother-in-law of W. W is only son of C, who is married to B, that means W is brother of X. B is sister of A, that means C is father of W. Based on above given information we have: 
Clearly, gender of A and Z is not known. Hence, statement II is not sufficient.
Average of A, B and C is 30 and that of C, D and E is 19. The average of A and E is 23 and that of B and E is 24. Find the value ...
The average of 18 numbers is 36. If 4 is added to each number, then the new average will be:
The average of 9 numbers is 100. The average of the first 4 numbers is 65 and the average of the last 4 numbers is 40. What is the 5th number?
The average score of 'x' boys is (x + 5), and the average score of 30 girls is (3x - 10). If the combined average score of all students is 60, then find...
- Average score of 60 contestants is 185. Two late entries with scores (k + 18) and (k - 12) join, and the average becomes 186. Find (k - 95).
In the Board exams, the average marks scored by 20 students is 55. But while calculating, marks of 2 students were wrongly entered as 43 and 60 in place...
15 years ago, the average age of all the 80 teachers of the college was 50 years. 8 years ago, the principal has retired from her post at the age of 60 ...
In a World Cup match, the average runs scored by Virat Kohli in his first 8 matches are 28. What should be his average score in the next two matches for...
The cost of booking a bus consists of a fixed charge and a variable charge per seat. When 75 seats are booked, the average cost per seat is Rs. 36. Howe...
The average of two numbers ‘X’ and ‘Y’ is 400 such that they are in the ratio 3:5 respectively. Another number ‘Z’ is 80 more than ‘Y’ a...
