CSIR NET 2023 || General Aptitude Quiz || Math (14.04.2023)

Study the table and answer the question.

In the table, production and sale (in 1000 tonnes) of a certain product of a company over 5 years is given.

In which year(s) sale is more than 90% of the production?

In triangle ABC, the bisector of angle BAC meets BC at point D in such a way that AB= 10 cm, AC = 15 cm and BD = 6 cm. Find the length of BC (in cm).

In a certain colony of cancerous cells, each cells divides into two every minute. How many cells will be produced from a single cell if the rate of division continues for 12 minutes:

There are three pipes connected with a tank. The first pipe an fill part of the tank in 1 h, second pipe can fill of the tank in 1 h. Third pipe is connected to empty the tank. After opening all the three pipes. part of the tank can be filled in 1 h, then how long will third pipe take to empty the full tank?

Which of the following is the smallest number that is a perfect square and is divisible by each of the numbers 6, 8 and 15?

The average age of 40 students of a class is x years. A student of 30 years left the class and two more students of ages 26 years and 20 years, joined the class in place of him. If the average of the class was still x years then find the value of x.

If , then find the value of :

The average weight of boys in a class is 30 kg and the average weight of girls in the same class is 20 kg. If the average weight of whole class is 23.25 kg, what could be the possible strength of boys and girls respectively in the same class ?