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in the question,A ^ B refers to a raised to power of B
assume that the rate of consumption of coal by a locomotive engine varies as the square of speed and is 1000 kg per hour when the speed is 60 km per hour, when in motion. if coal costs the railway company Rs 15 per 100 kg and if the other expenses of running the train is Rs 12 per hour. find the formula for the cost in paise per km when the speed is S km per hour:
a)(1200/s) + (25 S/6)
b) none of these
c)(1200/S) +(5 S^ 2/18)
d)(1200/S)+(25 S^2/6)

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TCS Other Question

two consecutive numbers are removed from the progression 1,2,3...n. The A>M of the remaining numbers is 26 1/4.the value of n is:
a)50
b) 81
c) cannot be determined
d) 60
Three distinct single digit no A,B and c are in G.M ,if abs(x) for real x is the absolute value of x(x , if x is positive or zero,and -x if x is negative), then the number of different possible values of abs (A+B -C) is;
a)3
b)6
c)5
d)4