Total number of pens = 6 + 4 + 2 + 4 = 16 Let S be the sample space. Then, n(S) = number of ways of drawing 4 pens out of 16 = ¹⁶C4= (16 × 15× 14 × 13 )/( 4 × 3 × 2 × 1) = 1820 Let E= event of drawing 4 pens so that one is green, two are blue and one is red = n(E) = ²C1×⁴C2×⁶C1= 2 × 6 × 6= 72 ∴ P (E) = (n(E))/(n(S))= 72/1820 = 18/455
A dynamo converts which form of energy?
Which of the following instrument is used to measure heat radiation?
Fog is an example of –
When heated from 0° to 10°C volume of a given mass of water will -
A charged particle oscillates about its mean equilibrium position with a frequency of 105 Hz. What is the frequency of the electromagnetic wa...
In the equation of motion ( v = u + at ), ( u) represents:
Which law describes the relationship between the force applied to a spring and its extension or compression?
In order to use the transistor as an amplifier, it has to operate in the____ region
Which of the following is the ultimate source of energy?
Which law of thermodynamics states that energy cannot be created or destroyed?