Direction (1 – 3): In the following questions, a series is given in which one term is wrong with which another series started. You have to find the wrong term in the given series then starting from that, find 5th term of new series so formed.
Example: 1, 2, 5, 21, 88, 445, 2676
Pattern of above series –
1 ×1+1=2
2 ×2+2=6
6 ×3+3=21
21 ×4+4=88
88 ×5+5=445
445 ×6+6=2676
So, wrong number = 5
Now new series start with wrong number, which is 5
So, new series
5 ×1+1=6
6 ×2+2=14
14 ×3+3=45
45 ×4+4=184
184 ×5+5=925
925 ×6+6=5556
So, 5th term of new series = 184
Q1. 3, 2, 6, 15, 60, 315, 1896
(a) 59
(b) 42816
(c) 7135
(d) 357
(e) 1432
Q2. 993, 850, 750, 688, 653, 638, 635
(a) 410
(b) 445
(c) 395
(d) 392
(e) 508
Q3. 20, 30, 50, 90, 160, 330, 650
(a) 230
(b) 470
(c) 310
(d) 190
(e) None of these
Q4. In each of the given two series, one number is wrong. Also, some relationships are given related to right number (which will come in the place of given wrong number) in both the series.
Series I – 24, 16, 20, 34, 72, 180, 556
Series II – 13, 76, 132, 180, 223, 258, 286
(A) difference of right numbers is divisible by 3.
(B) Sum of both the right numbers is divisible by 73.
(C) Both right numbers lie between 180 and 185.
(a) Only (A) & (C) correct
(b) Only (A) & (B) correct
(c) Only (B) & (C) correct
(d) All (A), (B) & (C) correct
(e) None of these is correct
Q5. In the following wrong number series a term is wrong as per pattern followed in the series. You have to find that wrong term and term which should replace that wrong term is your answer. (You have to mark correct term as per series not the wrong term mentioned in series)
32, 48, 80, 112, 176, 208, 272
(a) 36
(b) 116
(c) 206
(d) 276
(e) Series is right no need to replace any number
Solutions
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