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Variable R and S are related by the equation R=1/S2(1 by S square).now,if S is increased by 10%,what will happen to R?
(A)R decreased by 19% (B)R decreased by 10% (C)R decreased by 17% (D)R decreased by 21% (E)R increased by 21%

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TCS Other Question

The distance between charu's and mani's places is 120km. charu traveled the whole distance from her place to mani's at 30km/hr but returned at 40km/hr.her average speed for the whole journey is(approx)
(A)36km/hr (B)37km/hr (C)33km/hr (D)34km/hr (E)35km/hr
The sum of two times one natural number and three times another natural number is less than 24. if the first natural number is less than or equal to eight,the highest value of the second natural number is:
(A)5 (B)6 (C)7 (D)8 (E)9