There are 5 tasks and 5 persons. Task-l cannot be assigned to either person-l or person-2. Task-2 must be assigned to either person-3 or person-4. Every person is to be assigned one task. In how many ways can the assignment be done?

 All good athletes want to win and all athletes who want to win eat a well-balanced diet;  therefore all athletes who do not cat a well-balanced diet are bad athletes. 
The best conclusion from this statement is that

Geeta: Naresh has become a better boxer since he started meditation. Radha: Impossible, A boxer's most important asset is his aggressiveness. Radha's statement reflect her belief that

Consider the following statements :

1. A man had a wife, two sons and daughters in his family 
2. The daughters were invited to a feast and the male members of the family went out to take part in a pienic 
3.The man's father did not return from his work. 

Which of the following statement is true?

Four persons A, B, C and D consisting of two married couples are in a group. Both the women are shorter than their respective husbands. A is the tallest among the four. C  is taller than B. D is B's brother. In this context, which one of the following statements is not correct ?

 A father is nine times as old as his son and the mother is eight times as old as the son. The sum of the father's and the mother's age is 51 years. What is the age of the son ?