For a party 7 guests are invited by a husband and his wife. They sit in a row for dinner. The probability that the husband and his wife sit together, is

For a party 7 guests are invited by a husband and wife. They sit in a row for dinner. The probability that the husband and his wife sit together, is

Three married couples sit in a row. Find the probability that no husband sits with his wife.

Three married couples sit in a row. Find the probability that no husband sits with his wife.

Three married couples sit in a row. Find the probability that no husband sits with his wife.

Three married couples sit in a row. Find the probability that no husband sits with his wife.

10 gentlemen and 6 ladies are to sit for a dinner at a round table.The probability that no two ladies sit together is

The ratio of the ages of the husband and the wife five years ago was 11:9 where as at the same ages of the husband and his son was 5:1 . Five years hence the sum of the three persons of the family ?

A man and his wife appear for an interview for two posts. The probability of the man's slection is 1/5 and that of his wife's slection is 1//7 . The probability that atleast one of them is selected , is

5 Indian and 5 Russian couples meet at a party and shake hands. The probability that no wife shakes hands with her husband is