Start learning 50% faster. Sign in now
Total number of pens = 6 + 4 + 2 + 4 = 16 Let S be the sample space. Then, n(S) = number of ways of drawing 2 pens out of 16 = ¹⁶C2 = (16 × 15 )/( 2 × 1) = 120 Let E= event of drawing two pens so that one is blue and one is yellow n(E) = ⁴C1× ⁴C1= 4 × 4= 16 ∴ P (E) = (n(E))/(n(S)) = 16/120 = 2/15
The sum of the total surface areas of two cubes is 2328 cm2. If the product of the length of their edges is 96 cm2, then find the ...
A rectangular swimming pool is 25 meters long, 10 meters wide, and 2 meters deep. Find the cost of tiling the walls and floor at ₹200 per square meter.
A rectangular frame of size 100 cm (length) x 120 cm (breadth) is to be surrounded by stickers of 2 cm x 2 cm size. How many stickers would be required ...
If 'Head' appears consecutively in the first three tosses of a fair/unbiased coin, what is the probability of 'Head' appearing in the fourth toss also?
A farmer wants to fence a rectangular piece of land that measures 20 meters in length and 30 meters in breadth. If the cost of fencing per meter is ₹1...
A circular cylinder and a hemisphere have the same radius (r) and the height of the cylinder is equal to the diameter of the hemisphere. Find the ratio...
4 boys from school A and 6 boys from school B together can set up an exhibition in 5 days, which 5 boys from school A and 10 boys from school C togethe...
A salesman’s terms were changed from a flat commission of 9% on all his sales to a fixed salary of Rs. 4000 plus 4% commission on all sales exceed...