There is a paternity dispute for a child'. Which tehchnique can solve the problem. Discuss the principle involved.

Find out which of the following statements have the same meaning: i. If Seema solves a problem then she is happy. ii. If Seema does not solve a problem then she is not happy. iii If Seema is not happy then she hasn't solved the problem. iv. If Seema is happy then she has solved the problem

In the adjoining figure ,seg DE is a chord of a circle with centre C. seg CF bot seg DE. If diameter of the circle is 20cm, DE=16cm , find CF . Recall and write theorems and properties which are useful to find the solution of the above problem. Using them solve the above problems.

Answer the following questions : Study the following principle and answer the questions. A force is excreted on a current - carrying conductor placed in a magnetic field. The direction of this force depends on both the direction of the current and the direction of the magnetic field . This force is maximum when the direction of the current is perpendicular to the direction of the magnetic field. By which law can we determine the direction of the force excreted on the current carrying conductor ?

Read the information given below and solve the questions based on it. Electric energy is produced in various ways like hydroelectric, wind power, solar energy, bio-fuel, etc. These energy sources are inexhaustible, sustainable. Besides, it does not cause any enviornment problem. Answer the question: Above information is about which type of energy?

Read the following paragraph and answer the questions: If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing gue to loss of energy. The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses haet energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistance box (meaning that the energy exchange takes place between the two objects only ), then no energy can flow from inside the box or come into the box. Which property of the substance is measured using this principle ?

The Chief Ministers of 22 states of India met at New Delhi to discuss the problem of rising prices. In how many ways can they seat themselves at a round table, if Karnatak and Maharastra Chief choose to sit together?

Read the following paragraph and answer the questions: If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing gue to loss of energy. The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses haet energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistance box (meaning that the energy exchange takes place between the two objects only ), then no energy can flow from inside the box or come into the box. Which principle do we learn about from this process?

Three persons work independently on a problem. If the respective probabilities that they will solve it are 1/3, 1/4 and 1/5, then find the probability that none can solve it.