Four friends, John, Mike, Sarah, and Lisa, are compared based on their heights. John is taller than Mike but shorter than Sarah. Lisa is shorter than John. Who is the tallest?

C. SARAH

Identify the missing letter in the series: a, e, i, o, ?

A. U

In a certain code, 'CAT' is coded as '3120'. How is 'DOG' coded if 'D' is 4, 'O' is 15, and 'G' is 7?

A. 4157

In a specific code, 'FISH' is represented as '614891'. How would 'BIRD' be coded?

A. 21918

Among four siblings, L is older than M but younger than N. O is younger than L. Who is the oldest?

C. N