Directions : In each of the following letter series, some of the letters are missing which are given in that order as one of the alternatives below it.

ab ---b -bbaa- 

Mrs. and Mr. Gopal have 3 daughters. Each daughter also has a brother. So how many members are there in this family?

If A = 2, M=26, Z=52, then BET =?

If 9 θ 11 α 2 = 40 and 13 θ 12 α 3 = 75, then 40 θ 41 α 5 = ?

Complete the following alphabet series.
ABC, PQR, DEF, STU, ?

If 8 α 48, 12 α 120 and 15 α 195, then what is the value of ‘A’ in 19 α A?

Directions: In each of these questions, three words are related in some way. The relationship among the words in the question can best be represented by one of the five diagrams (a), (b), (c), (d) and (e) given below. Mark your answer accordingly.

Iron, Lead, Nitrogen