Verbal Reasoning - Mental Ability Questions

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

ab_d_ed_baa_ _de

Which set of letters when sequentially placed at the gaps in the given letter series shall complete it?

x_zz_xx_z_yx

Find the odd word/letters/number pair from the given alternatives.

The age of the father 4 years ago was 8 times the age of his son. At present, the father's age is 4 times that of his son. Find the present age of son.

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

Arctic Circle, Tropic of Cancer, ? , Tropic of Capricorn

A courier delivery man cycles 6 km South, then turns West and cycles 2 km West, then turns to his right and cycles 6 km, then turns West and cycles 8 km.Where is he now with respect to his starting position?

The weights of 4 boxes are 10, 40, 50 and 80 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?

The number of letters that are preceded by a symbol but not followed by a number in the given expression is ___.

SM@A#N2B4O&3C5P+D2