Members: P, M, Q, N, T, U
Let us first decode the symbols and then draw a family tree.
P + M ÷ Q × N ÷ T × U + N;
Family Chart,
Family tree according to the given information,
From the family tree,
U is the father of N, N is the daughter of U, T is the sister of N, N is the mother of Q, Q is the sister M, P is the father M and N is the wife of P.
So, N is the mother of M and U is the maternal grandfather of M.
Hence, " Maternal grandfather" is the correct answer.