Complete analogous pair - Oasis : Sand : : Island : ?

C. WATER

Village : City : Suburb

B. SCHOOL : COLLEGE : UNIVERSITY

Complete analogous pair - Forecast : Future : : Regret : ?

C. PAST

In following questions, one term in number series is incorrect. - Find out the incorrect number 1, 5, 9, 16, 25, 37, 49

B. 15

Choose or find odd letter group - PENAL , IDHNI , RUUD , KRTSINSA

A. PENAL