पांच कुर्सियां C1, C2, C3, C4 और C5 एक के ऊपर एक रखी गई हैं। यदि C1, C2 के ऊपर है, C3, C4 के ऊपर है लेकिन C5 के नीचे है, और C4, C1 के ऊपर है, तो कौन सी कुर्सी ठीक मध्य स्थान पर है?

Seven friends, L, M, N, O, Q, R and S, are sitting in a straight line facing north. No one sits to the right of S. S sits immediately to the right of Q. Only three people sit between S and N. R sits third to the left of M. O sits to the immediate right of M. How many people sit between L and Q?

Five people, A, B, C, D and E, are sitting in a row, facing towards the north. Only two people are sitting between A and D. B is sitting at the third position from the extreme left of the row. B is sitting to the immediate right of A. B is sitting to the immediate left of E. Exactly how many people are sitting between E and A?