Describe how you would construct a cost of living index number for the lower middle class people in Kolkata.

Explain how would construct a cost of living index number (C.L.I)?

How would you construct an AND gate by using minimum number of OR and NOT gate.

How would you construct an OR gate by using minimum number of AND and NOT gates.

How would you construct a NOT gate by using a NOR gate.

How would you construct an AND gate by using more than one NAND gate?

How would you construct the basic gates by using either NOR gate or (ii) NAND gate?

How would you construct a frequency distribution of a continuous variable?

Answer the following questions (Alternatives are to be noted):Describe how you would fit an exponential trend to time series data using method of least square.

A uniform magnetic field of 100 G (IG=10^(-4)T) exists in a region of length about 10 cm and area of cross- section about 10^(-3)m^(2) . The maximum current carrying capacity of a given coil of wire is 15A and the number of turns per unit length that can be wound round a core is at most 1000 turns m^(-1) . How would you utils the coil to design a solenoid for the required purpose ? Assume the core is not ferromagnetic.

Explain with the help of a diagram, how you would construct a NOT gate by using an n-p-n transistor.