Verbal Reasoning - Mental Ability Questions

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

a_ ca_c_dc_d_ad_

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
C A E, F D H, I G K, ?

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

5 - 6 + 30 x 8 ÷ 16 = ?

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

If (3)2 @ 1 * 7 = 98 and (4)2 @ 2 * 16 = 178, then (5)2 @ 3 * 9 = ?

If 'due to you' is coded as 'ba da ca', 'he is due' as 'xe ba le' and 'is sue to' as 'ba xe ca', then 'you' = ?

Out of the 100 nature lovers, 20 people wanted to see only bison, 30 wanted to see both bison and tiger, 15 wanted to see only leopard, 25 wanted to see only tiger, 5 wanted to see both bison and leopard and the remaining wanted to see only bear.

The ratio of people to wanted to see tiger to those who wanted to see bear is

In this question, the sets of numbers given in the alternatives are represented. The columns and rows of Matrix I are numbered from 0 to 4 and that ofMatrix II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g., D can be represented by 02, 10,etc., and 'R' can be represented by 55, 67, etc. Similarly you have to identify the set for the word 'BEAR'.