Which of the following numbers is obtained when 18th number from the left of the number series is added to 19th from the right?

Study the number series given below and answer the questions which follow:

6 7 8 9 9 8 7 9 7 7 8 9 7 8 7 6 9 6 8 9 7 7 9 8 9 7 6 8 8 7

How many such numbers are there in the given series each of which when subtracted from the following number, has a difference of 2?

If it is possible to make only one meaningful word with the fourth, seventh, ninth and tenth letters of the word RECREATION, which of the following will be the third letter of that word? If no such word can bemade, give ‘X’ as your answer and if more than one such word can be formed, give Y as the answer.

In a certain code if LOUD is written as JQSF then which of the following English words shall becoded as PKQG?

The following three words are alike in a certain manner and so form a group.Which one of ‘the five options belong to the same group?arc, radius, circumference

What should come next in the following letter series?

c b a a c b a a b c b a a b c c b a a b c d c b a a