The given sequence is a combination of three series:I. 1st, 4th, 7th, 10th, 13th terms i.e., 2, 4, 6, 8, ?II. 2nd, 5th, 8th, 11th terms i.e., 1, 4, 7, 10III. 3rd, 6th, 9th, 12th terms i.e., 2, 5, 8, 11Clearly, I. consists of consecutive even numbers. So, the missing term is 10.
234.
1.5, 2.3, 3.1, 3.9, ... What number should come next?
(A) 4.2
(B) 4.4
(C) 4.7
(D) 5.1
Solution:
In this simple addition series, each number increases by 0.8.
235.
Which of the following will come in place of the question mark (?) in the following sequence?
PRODUCTIVITY, RODUCTIVIT, ODUCTIVI, ?
(A) DUCTIV
(B) DUCTLY
(C) UCTIV
(D) DUCTI
Solution:
PRODUCTIVITY = RODUCTIVIT.(First and last letters are removed.) RODUCTIVIT = ODUCTIVI. ODUCTIVI = DUCTIV.
236.
What will come at the place of question mark ? 7, 11, 19, 35, 67, ?
(A) 99
(B) 131
(C) 137
(D) 124
Solution:
Logic: Last Term *2 - 3 = Next Term. First Term = 7 Second Term = 7 * 2 -3 = 11 Third Term = 11 * 2 - 3 = 19 Fourth Term = 19 * 2 - 3 = 35 Fifth Term = 35 * 2 - 3 = 67 Sixth Term = 67 * 2 -3 = 131 Alternative Solution : Last term + 2n = Next Term First Term = 7 Second Term = 7 + 22 = 11 Third Term = 11 + 23 = 19 Fourth Term = 19 + 24 = 35 Fifth Term = 35 + 25 = 67 Sixth Term = 67 + 26 = 131
237.
Find the missing term: 6, 11, 21, 36, 56, ?
(A) 42
(B) 51
(C) 81
(D) 91
Solution:
The pattern is +5, +10, +15, +20,........So, missing term=56+25=81
238.
8, 6, 9, 23, 87 , ... What number should come next?
(A) 128
(B) 226
(C) 324
(D) 429
Solution:
8 x 1 - 2 = 6 6 x 2 - 3 = 9 9 x 3 - 4 = 23 23 x 4 - 5 = 87 87 x 5 - 6 = 429 ...
239.
Find the missing term :- 240, ?, 120, 40, 10, 2
(A) 180
(B) 240
(C) 420
(D) 480
Solution:
The pattern is ÷ 1, ÷ 2, ÷ 3, ÷ 4, ÷ 5 So, missing term = 240 ÷ 1 = 240
240.
Find the missing term: 13, 35, 57, 79, 911, ?
(A) 1110
(B) 1112
(C) 1113
(D) 1315
Solution:
The term of the given series are numbers formed by joining together consecutive odd numbers in order i.e., 1 and 3, 3 and 5, 5 and 7, 7 and 9, 9 and 11...................So, missing term = number formed by joining 11 and 13 = 1113