RRB Group-D 29th oct 2018-shift -2

A boy has 120 balls of which some are white and the remaining are black. If the percentage of white balls is 45%, find the number of black balls he has.

Prasid and Deep separately can do a certain work in 32 and 24 days respectively. They decided to do the work together and Niloy also joined them. If all of them together can complete the same work in 8 days, then how long does Niloy take to do the work alone?

Find the number of squares in the figure:

A body is falling from a height of 200 m. After it has fallen 100 m, the body will possess:

The plant hormone that helps in the growth of the stem is ...........

The elements belonging to groups ............ are known as 'd' block elements.

Find the odd one out?

The usual average speed of a car on a particular stretch of road is 75 km/hr. On a particular day, the average speed was 12% less than the usual, as a result of which the time taken was I S minutes more. How long is the stretch of road, in kilometres?

Each question given below consists of a statement, followed by two arguments numbered I and II. You have to decide which of the arguments is a 'strong' argument.
Statement:
Should there be a dress code for college students?
Arguments:
I. Yes, a dress code will bring unity and eliminate discrimination.
II. No, dress code takes away the opportunity to showcase students' style sense.

The number of books sold by a seller over a year is as follows. In which months did he sell more than the average number of books sold that year?