Verbal Reasoning - Mental Ability Questions

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
ERADICATE

While posing for a family photo, the father is standing to the right of the son and left of the grandmother. The mother is sitting to the left of her daughter and right of the grandmother. Who is seated in the middle?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
MHZ, NIW, OKT, PNQ, ?

If '+' means 'x' , '­' means '÷' , 'x' means '­' and '÷' means '+' , then what will be the value of 16 ÷ 4 x 10 ­ 5 + 8 = ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

8, 27, 125, 343, ?

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

XX, XOX, XXXX, XXOXX, XXXXXX, ?

In a row, there are 6 boys between A and B and A being the first boy in row. There are 3 boys between B and C. If there are 12 boys after C, then how many minimum boys are there in the row?

If 'WZB' stands for 'DAY', how will you code 'MONDAY'?