A teacher takes three children from her class to a zoo at a time, but she does not take the same three children to the zoo more than once. She finds that she went to the zoo 84 times more than a particular child has gone to the zoo. The number of children her class is
a. `12` b. `10` c. `60` d. none of these

A man has 8children to take them to a zoo. He takes thre of them at a time to the zoo as often as he can without taking the same 3 children together more than once. How many times will he have to go to the zoo? How many times a particular child will to to the zoo?

A father with 8 children takes 3 at a time to the Zoological Gardens, as often as he can without taking the same 3 children together more than once. The number of times he will go to the garden, is

The kindergarten teacher has 25 kid in her class. She takes 5 of them at a time, to zoological garden as often as she can, without taking the same 5 kids more than once. Then the number of visits the teacher makes to the garden exceeds that of a kid by

There are three teams x , x+1 and y childrens and total number of childrens in the teams is 24 . if two childrens of the same team do not fight, then

The present age of a father is three years more than three times the age of the son. Three years hence, fathers age will be 10 years more than twice the age of the son. Determine their present ages.

The present age of a father is three years more than three times the age of the son. Three years hence father’s age will be 10 years more than twice the age of the son. Determine their present ages.

The present age of a father is three years more than three times the age of the son. Three years hence father’s age will be 10 years more than twice the age of the son. Determine their present ages.

Two different families A and B are blessed with equal number of children. There are 3 tickets to be distributed amongst the children of these families so that no child gets more than one ticket. If the probability that all the tickets go to children of the family B is (1)/(12) then the number of children in each family is : (a) 3 (b) 5 (c) 4 (d) 6

An art teacher has a jar containing b buttons to distribute to her class for a project .In order to give each children in the class 6 buttons , she will need 18 more buttons. If she gives each children 5 buttons,she will hav 4 left over.How many children are in the class?

A woman has a haemophilic son and three normal children . Her genotype and that of her husband with respect to this gene would be