GMAT (Graduate Management Admission Test) Question:

The 7th digit of (202)3 is

1. 2
2. 4
3. 8
4. 6

Ans : C

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Find the G.C.D of 12x2y3z2, 18x3y2z4, and 24xy4z3	A railway half ticket costs half the full fare and the reservation charge is the same on half ticket as on full ticket. One reserved first class ticket from Chennai to Trivandrum costs Rs. 216 and one full and one half reserved first class tickets cost Rs. 327. What is the basic first class full fare and what is the reservation charge?