CT 30: Reasoning (Series সিরিজ)

1) If the 10th term of the sequence a, a - b, a - 2b, a - 3b,......is 20 and the 20th term is 10, then the xth
term of the series is

2) The first and last terms of an arithmetic progression are 33 and -57. what is the sum of series, if it has 16 terms?

3) Which letter cluster will replace the question mark (?) to complete the given series?
ANGE, DSBB, GXWY, ?

4) Select the correct option that will fill in the blank and complete the series.
R, U, X, A, ......

5) Which of the following numbers will replace the question mark (?) in the given series?
11, 20, 43, 94, 187, 336, 555, ?

6) What should come next term in the following number series?
718532694, 18532694, 1853269, 853269, ?

7) Which of the following numbers will replace the question mark (?) in the given series?
78, 112, 64, ?, 50, 140

8) Select the letter that will come next in the followingseries.
O, R, U, X, A, .....

9) What should come next term in the following number series?
718532694, 18532694, 1853269, 853269, ?

10) Select the correct option that will fill in the blank and complete the series.
12, 14, 17, 15, 22, 16, .....