Prelims

In a meeting, the map of a village was placed in such a manner that south-east becomes north, north-east becomes west and so on. What will south become ?

In how many ways can four children be made to stand in a line such that two of them, A and B are always together ?

A candidate attempted 12 questions and secured full marks in all of them. If he obtained 60% in the test and all questions carried equal marks, then what is the number of questions in the test ?

When ten persons shake hands with one another, in how many ways is it possible ?

The difference between the simple interest received from two banks on Rs. 500 for two years is Rs. 2-50. What is the difference between their rates ?

The diameters of two circular coins are in the ratio of 1:3. The smaller coin is made to roll around the bigger coin till it returns to the position from where the process of rolling started. How many times the smaller coin rolled around the bigger coin ?

A man fills a basket with eggs in such a way that the number of eggs added on each successive day is the same as the number already present in the basket. This way the basket gets completely filled in 24 days. After how many days the basket was 1/4thfull ?