Series Completion - Study Mode

[#121] Choose the missing terms out of the given alternatives : A, B , N, C, D, O, E, F, P, ?, ?, ?
Correct Answer

(C) G, H, Q

Explanation

Solution: The given series may be divided into 2 series: I: A, B, C, D, E, F, ?, ? and II: N, O, P, ? Clearly , the given series consists of two terms of followed by one term of II. The missing terms in I are G and H while the missing term in II is Q.

[#122] Choose the missing terms out of the given alternatives : ejo tyd ins xch ?
Correct Answer

(B) mrw

Explanation

Solution: There is a gap of four letters between the first and second, the second and third letters of each term, and also between the last letter of a term and the first letter of the next term.

[#123] Choose the missing terms out of the given alternatives :1st letter : Z, S, S, W, O, T, K, Q, G, ? , ?
Correct Answer

(A) N, C

Explanation

Solution: The given sequence is a combination of two series: I: Z, W, T, Q, ? and II: S, O, K, G,, ? The pattern in I is: Z - 3 = W - 3 = T - 3 = Q - 3 = N The pattern in II is : S - 4 = O - 4 = K - 4 = G - 4 = C

[#124] Choose the missing terms out of the given alternatives : A, B, B, D, C, F, D, D, H. E, ?, ?
Correct Answer

(D) J, F

Explanation

Solution: The given sequence is a combination of two series: I: 1st , 3rd, 5th, 7th, 9th, 11th terms i.e., A, B, C, D, E, ? II: 2nd, 4th, 6th, 8th, 10th terms i.e., B, D, F, H, ? Clearly , I: consists of consecutive letters while II: consists of alternate letters. So, the missing letter in I is F, while that in II is J. So, the missing terms i.e., 10th and 11th terms re J and F respectively.

[#125] 2, 15, 4, 12, 6, 7, ?, ?
Correct Answer

(B) 8, 0

Explanation

Solution: Let the missing terms of the series be x 1 and x 2 . Thus, the sequence 2, 15, 4, 12, 6, 7, x 1 x 2 is a combination of two series : I. 2, 4, 6, x 1 and II. 15, 12, 7, x 2 I consists of consecutive even numbers. So, missing term, x 1 = 8. The pattern in II is - 3, - 5,......So, missing term, x 2 = 7 - 7 = 0.