The total age of all the guests in the party was 540 years. If a South Indian couple (guests) left the party, then the average of the remaining guests still remained unchanged, where the age of both the husband and wife (the South Indian couple)was same, then the average age of this couple and the total number of guests in the party, respectively, can be :

The total age of all the guests in the party was 540 years. If a south indian couple (guests) left the party then the average of the remaining guests still remained unchanged, where the age of the both the husband and wife ( the south indian couple ) was same then the average age of this couple and the total number of guests in the party, respectively can be :

In a class of 10 students the average age was 16 years. When two students left the class, the average age of the remaining students became 16.25 years. What is the total age of the students left

5 Indian and 5 American couples meet at a party & shake hands . If no wife shakes hands with her husband and no Indian wife shakes hands with a male, then the number of hand shakes that takes place in the party is

A gentlemen invites a party of 10 guests to a dinner and places 6 of them at one table and the remaining 4 at another the table being round . The number of ways in which he can arrange the guests is

5 Indian & 5 American couples meet at a party& shake hands. If no wife shakes hands with her own husband & no Indian wife shakes hands with a male, then the number of hand shakes that takes place in an party

5 Indian & 5 American couples meet at a party& shake hands. If no wife shakes hands with her own husband & no Indian wife shakes hands with a male, then the number of hand shakes that takes place in an party

A gentlemen hosts a party of (m+n) guests and places 'm' at one round table and the remaining 'n' at the other round table. Number of ways the guests can be arranged is

A gentlemen hosts a party of (m+n) guests and places 'm' at one round table and the remaining 'n' at the other round table. Number of ways the guests can be arranged is