What is the least common multiple (LCM) of 12 and 15?

A. 30
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If M is the father of N, and N is the son of O, what is the relationship of O to M?

C. WIFE

If P is the sister of Q, and Q is the mother of R, what is the relationship of P to R?

A. AUNT

If J is the son of K, and K is the daughter of L, what is the relationship of L to J?

B. GRANDMOTHER

What is the next letter in the series: A, C, E, G, I, ?

B. J