Verbal Reasoning - Mental Ability Questions

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Transaction

If A denotes '+', B denotes '-', C denotes '/', D denotes 'x' then the value of the expression 9 D 48 C 6 B 16 A 3 is

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?

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

NO_PQN_PP_NOP_Q

From the given alternative words, select the word which cannot be formed using the letters of the given word:
ECCENTRICITY

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

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

Three words in bold letters are given in each question, which have something in common among themselves. Out of the four given alternatives, choose the most appropriate description about these three words.

knot: Watt: Fathom