Verbal Reasoning - Mental Ability Questions

How many triangles can be found out from the following figure:

Select the related word/letters/number from the given alternatives.
DB: IC:: YE: ?

In a row of 15 children, when Raju was shifted three places towards right, he became 8th from the right end. What was his earlier position from the left end of the row?

In the following question, select the missing number from the given series.
19, 38, ?, 228, 684, 1368

Two workers X and Y start walking from the same place. X walks 65 m West, then turns left and walks 25 m. In the meanwhile Y walks 20 m North, then turns to his right and walks 35 m , then turns South and walks 45 m. Where is Y with respect to X?

If "A" denotes "added to", "B" denotes "divided by", "C" denotes "multiplied by" and "D" denotes "subtracted from", then 116 B 29 C 6 A 24 D 45 = ?

If in a certain language TEACHER is coded as QBXZEBO, then how is STUDENT coded in the same language?

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
K, J, L, I, M, ?