Differences are: -1, -2, -3, -4, -5. So 90 - 5 = 85

After going 15 km North and 15 km South, Ramesh returns to his original latitude. He is only 8 km East of his starting point.

While all musicians are creative, and some creative people are scientists, we cannot definitively conclude that some musicians are scientists without knowing the overlap between the two groups.

The differences are: 9, 13, 17, 21, (25). Following the pattern of increasing by 4 each time, the next difference is 25, so 65+25=90

Given only that D sits between A and B, C is at one end, and E is not adjacent to F, multiple valid arrangements exist. The person at the other end cannot be uniquely determined.

A lexicon is a collection of words; an atlas is a collection of maps. The relationship is between a reference work and its primary content.

Multiple arrangements satisfy the given conditions, so the middle person cannot be uniquely determined.

T=6, I=5, G=9, E=8, R=1, L=3, O=4, N=2. G=9, R=1, I=5, N=2. But check: GRIN = G-R-I-N. Need position mapping from TIGER/LION. G=9, R=1, I=5, but N=8 from TIGER mapping. Answer is 6958.

In circular arrangement with 6 seats, if Meera and Neha are opposite (3 seats apart), and Priya is 2 seats to Meera's left, then Priya is 2 seats to Neha's right.

X's mother = Y's sister. Y = Z's mother. So X is the sibling of Z's mother, making X the uncle/aunt of Z.