TCS Company Numerical Ability Arithmetic

For the year 1998,the sum of digits is 1+9+9+8=27.The next time the sum of digits is 27 happens between the years
a)2500 and 2700
b)2701 and 2900
c)3101 and 9900
d)2901 and 3100

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TCS Other Question

Find the average speed, if a man travels at a speed of 24kmph up and 36kmph down at an altitude of
200m.
three single digit nos are in GP.If abs(x) for rea lx is absolute value of x (x if x is +ve/0 and -x if x is-ve),then the number of different possible values of abs(A+B-c) is
a)3 b)5 c)6 d)4