Select the related word from the given alternatives:

Medicine : Patient : : Education : ?

Identify the diagram that best represents the relationship among the given classes.
Music Instrument, Piano, Guitar

In the following question, by using which mathematical operator will the expression become correct?
18 ?6 ? 9 ? 27

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
UNIFORMITY

In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.

If "÷" denotes "multiplied by", "+" denotes "subtracted from", "x" denotes "added to" and "–" denotes "divided by",then
12 – 6 + 28 × 3 ÷ 9 = ?

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
Abandoned

A man goes 24 m due west and then 10 m due north. Then the distance of him from the starting point is