Verbal Reasoning - Mental Ability Questions

In the following question, select the missing number from the given series.672, 666, 660, 654, ?

A series is given, with one word missing. Choose the correct alternative from the given ones that will complete the series.
nephew, anther, tenses, prunes, preens, ?

If + means division, ­ means multiplication, '÷' means subtraction, x means addition, and < means less than, then which of the following is false?

The distance between two cities is 30 Km. A man goes at a speed of 30 Km per hour and returns at 20 Km per hour. What is his average speed?

Vineet travels 16 km towards west, turns right and travels another 12 km, and then takes two successive left turns covering 8 km and 12 km in each turn respectively. Finally, he takes a right turn and travels 10km further. How far is he now from his original position ?

In a certain code language, '÷' represents '+', '-' represents 'x', '+' represents '÷' and 'x' represents '-'. Find out the answer to the following question.

8 - 14 + 7 x 10 ÷ 9 = ?

Arrange the given words in the sequence in which they occur in the dictionary.
1. Dillydallying
2. Dillydallied
3. Dillydally
4. Dilled
5. Dillydallies

In the following question, select the odd word from the given alternatives.