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A polystyrene, having formula Br3C6H3(C3H8)n was prepared by heating styrene with tribromobenzoyl peroxide in the absence of air. If it was found to contain 10.46% bromine by weight, find out the value of n.
Final answer n = 19. Please explain procedure
Show that the f(x)=|x-2| is continuous but not differentiable at x=2.
Six persons have alotted seats while take seats at random.Probability
that exactly two persons are found at allotted seats is
(a)3/16 (b)3/8
(c)5/12 (d)None of these
answer given is (a)
my doubt : why it should not be 4!/6!
two bodies 11 and 11.5 kg are connected by a long inextensible string passing over a frictionless pulley.calculate velocity and hieght ascended/descended by each body at the end of 4 seconds
The product
(1-1/n)(1-1/n+1)(1-1/n+2)(1-1/2n) equals to?
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