Practice MCQ Questions and Answer on Series Completion

61.

One term in the number series is wrong. Find out the wrong term.
5, 10, 40, 80, 320, 550, 2560

Solution:

 The correct pattern is x 2, x 4, x 2, x 4, ..... So, 550 is wrong and must be replaced by (320 x 2) i.e. 640.

62.

1, 9, 25, 49, 81, ?

Solution:

 The series consists of squares of consecutive odd numbers i.e. 12, 32, 52, 72, 92,..... So, missing term = 112 = 121.

63.

1, 9, 25, 49, ?, 121

Solution:

 The given series consists of squares of consecutive odd numbers i.e. 12, 32, 52, 72,..... So, missing term = 92 = 81.

64.

Choose the missing terms out of the given alternatives : A, D, H, M, ?, Z

Solution:

 A + 3 = D + 4 = H + 5 = M + 6 = S + 7 = Z

65.

One term in the number series is wrong. Find out the wrong term.
1, 2, 4, 8, 16, 32, 64, 96

Solution:

 Each term of the series is obtained by multiplying the preceding term by 2. So, 96 is wrong and must be replaced by (64 x 2) i.e. 128.

66.

Choose the missing terms out of the given alternatives : WFB , TGD , QHG , ?

Solution:

 1st letter : W - 3 = T - 3 = Q - 3 = N 2nd letter : F + 1 = G + 1 = H + 1 = I 3rd letter : B + 2 = D + 3 = G + 4 = K

67.

Which of the following will not be a number of the series 1, 8, 27, 64, 125,.....?

Solution:

 The given series consists of cubes of natural numbers only. 256 is not the cube of any natural number.

68.

Choose the missing terms out of the given alternatives :S-4, F-6, H-8, J-10, ?, ?

Solution:

 The letters in the series are alternative and the numbers indicate their position in the English alphabet from the beginning.

69.

Choose the correct order of the given alternative : bc, cde, de, efg, fg, ?

Solution:

 In the series, last letter of the term is started to a new term and next two letter is included in the term.So, option (A) is the answer.

70.

5, 2, 7, 9, 16, 25, ?

Solution:

 Each term in the series, except the first two terms, is the sum of the preceding two terms. So, missing term = 16 + 25 = 41.

Indian Polity Mcq IAS GK Question India GK World GK GK questions GK Quiz Biology GK Science GK Physics GK Chemistry GK General Awareness Computer GK Political GK Indian Political GK Economics GK History GK Sports GK Geography GK Teaching Aptitude GK CTET/TET GK B Ed Entrance GK Banking GK SSC GK UPSC GK Indian Army GK Hindi Grammar GK Hindi Grammar MCQ Reasoning questions Bihar GK Rajasthan GK Jharkhand GK MP GK UP GK Chhattisgarh GK Haryana GK HP GK Maharashtra GK Electronics GK Agriculture GK States/Capitals GK Books Name & Author Arthimetic Verbal Reasoning Non Verbal Reasoning English