Questions on men & women

Average ratio of men and women in human population is :

Five men and five women are to be arranged in a row while seating in a party. Quantity I: Number of ways of arranging 5 men and 5 women such that on two men or women are adjacent to each other. Quantity II: Number of ways of arranging 5 men and 5 woment such that all men sit together.

Population (in thousands ) of men and women in a village in different years.

The mean age of a combined group of men and women is 25 yrs . If mean age of men is 26 and that of women is 21 , then percentage of men and women in the group , is ,

Of the 72 persons working in an office,28 are men and the remaining are women.Find the ratio of the number of: men to that of women. men to the total number of persons persons to that of women

Five men and five women are be arranged in a row while seating in a party. Quantity I: number of ways of arranging 5 men and 5 women such that no two men or women are adjacent to each other. Quantity II: Number of ways of arranging 5 men and 5 women such that all men sit together.

Assertion. Urinary tract infection is less common in women than in men. Reason. Urethra is longer in women than in men.

In how many ways can a committee consisting of 3 men and 2 women be formed from 7 men and 5 women ?

In how many ways can a committee consisting of 5 men and 6 women be formed from 8 men and 10 women?