Choose the odd letter group: LMN, OPQ, RST, UVW, XYZ

D. UVW

What is the next letter in the series: B, D, F, H, ?

A. J

In the sequence 1, 3, 6, 10, what is the next number?

A. 15

A family consists of a father, a mother, and two children. The father is a lawyer, and the mother is a teacher. If one child wants to be a doctor and the other a musician, which profession is not represented in the parents' professions?

C. DOCTOR

If A=1, B=2, C=3, and so on, what is the code for the word 'CAT'?

A. 312