In the sequence 1, 3, 5, 7, 9, 11, how many times does the number 10 occur?

A. 0

In the series 4, 8, 12, 16, 20, how many times does the number 12 appear?

A. 1

In the sequence 7, 14, 21, 28, 35, how many times does the number 21 occur?

A. 1

If in a certain code, 'CAT' is coded as 'DBU', how is 'DOG' coded in that language?

A. EPH

In a certain code, 'HELLO' is written as 'IFMMP'. How would 'WORLD' be coded in the same way?

A. XPSME