How many odd numbered pages are there in a book of $1089$ pages?

There were a total of $10$ bicycles and tricycles. If the total number of wheels was $24$, how many tricycles were there?

A monkey climbs a $12$ m high pole. In the first minute he climbs $2$ m and slips down in the next minute by $1$ m. If this continues, then in how minutes will the monkey climb at the top of the pole?

A group of $1200$ persons consisting of captains and soldiers is travelling in a train. For every $15$ soldiers there is one captain. How many captians are there in the group?

A person is given $₹1$ for shooting at the target. If he misses, then he has to give $₹1$. If he gets $₹30$ for $100$ chances, then, how many chances did he miss?

The sum of the ages of $4$ children born at intervals of $4$ years is $48$. Find the age of the youngest child.

Mr. and Mrs. Gopal have two daughters and each daughter has one brother. What is the possible minimum number of persons in the family?

In a group of equal number of cows and herdsmen the number of legs was $28$ less than four times the number of heads. The number of herdsmen was ______.