A, B, C and D are four people. 1)A is the son of B.
2)B is the daughter of C. 3)C is the mother of D. Which among the following is true?

For his highly confidential project, Professor Mark Philip is trying to make a team comprising four doctors: two males and two females. He can choose the team members from among Peter, Jack, Martin, Steve, Mary, Rosy and Stephanie. Peter, Jack, Martin and Steve are male doctors. Mary, Rosy and Stephanie are female doctors. Peter and Jack do not work together. Rosy and Peter refuse to work together. Martin and Stephanie cannot work together. If Jack is made a member of the team, who among the following can be the other three members of the team?

A, B, C and D were sitting around a dinner table and discussing their professions. A said, 'I am sitting opposite the tester.' B said, 'I am on the right of the programmer.' The debugger said, 'I am on the left of the manager.' D said, 'I am sitting opposite C.' Find the professions of A and B on the basis of the above-given information.

There are six members in a family: C1, C2, C3, C4, C5 and C6. The relation among the family members is such that there are 2 fathers, 1 mother, 1 daughter and 3 brothers. No person in the family is a grandmother to the other family members. Additional information is given as follows:  C3 is the sister of C6.  C2 is the brother of C5's husband.  C4 is the father of C1 and grandfather of C6. Who is the mother in the family?

How many 7s are there in the following series which are immediately preceded by 9 but not followed by 7? 749769774329727793279

Suppose there is a group of 5 people P, Q, R, S, and T. Information about these 5 persons is as follows:  Among them one is cricketer, one is Hockey player, and one is football player.  P and S are unmarried women in the group and do not take part in any game.  None of the women plays Hockey or Cricket.  There is a married couple in the group. T is the husband.  Q is the brother of R and is neither a hockey player nor a football player. Based on the given information, who is the Wife of T?

There are three people, A, B and C. They are to share a cake equally. They cut the cake into 'n' equal pieces. After each one of them finishes eating 4 pieces of the cake, the total number of the remaining pieces of the cake is equal to that to which each person was entitled initially. Find the value of 'n'.

Suppose there is a group of 5 people P, Q, R, S, and T. Information about these 5 persons is as follows:  Among them one is cricketer, one is Hockey player, and one is football player.  P and S are unmarried women in the group and do not take part in any game.  None of the women plays Hockey or Cricket.  There is a married couple in the group. T is the husband.  Q is the brother of R and is neither a hockey player nor a football player. Based on the given information, who is the Cricketer in the group?

Read the following information and answer the given question: Four lions, P, Q, R and S, and four tigers, L, M, N and O are being transferred from a wild life sanctuary. They are being transferred in two special animal transport vehicles. Each vehicle can hold four animals according to the following conditions: 1. There are exactly two lions and two tigers in each vehicle. 2. Either P or Q, but not both, can be kept in the first vehicle. 3. If L is in the first vehicle, R must also be in the first vehicle. 4. If N is in the first vehicle, Q cannot be in the first vehicle. If Q is in the first vehicle, which of the following three animals are kept along with Q?

Six people, P, Q, R, S, T and V, run a marathon. Q does not win. Two runners separate T and S. P is running behind S and T. Q is running ahead of T and there is one runner in between the two of them. V is running ahead of S. How many runners separate P and V?

Read the following information and answer the given question: A certain code-word uses the digits 1, 2, 3, 4 and 5. The digits are written from left to right and the following conditions are to be adhered to: 1)The code-word must be four-digits long. 2)Repetition of digits is allowed but there should be atleast two different digits in the code-word. 3)1 cannot be the first number in the code-word. 4)If 2 occurs, it should occur more than once. 5)3 cannot be the last number in the code-word, nor can it be next to the last digit. 6)If 1 occurs, 4 must also occur. 7)If 2 does not occur, 5 too cannot occur. Which of the following can be the code-word?