Questions Asked in SBI PO Prelims Held on 1st & 8th July 2018 (All Shifts)

Dear Readers, Here we have given the list of Number Series Questions Asked in SBI PO Examination which was held on 1st & 8th July 2018 (All Shifts). Aspirants can use this.

Number Series Questions Asked in SBI PO Prelims Examination (1st & 8th July 2018) All Shifts:

Directions (Q. 1 â€“ 24) what value should come in the place of question mark (?) in the following number series?

1). 4, 9, 17, 35, ? , 139

Explanation:

The pattern is, *2 + 1, *2 â€“ 1(alternatively)

2). 200, 101, 102, 154, ?

Explanation:

The pattern is, *0.5 + 1, *1 + 1, *1.5 + 1, *2 + 1,…

3). 5000, 1000, 400, 320, ? , 1638.4

Explanation:

The pattern is, *1/5, *2/5, *4/5, *8/5, *16/5,..

4). 2, 15, 59, 117, 116, ?

Explanation:

The pattern is, *8 â€“ 1, *4 â€“ 1, *2 â€“ 1, *1 â€“ 1, *0.5 â€“ 1,…

5). 26, 138, 29, 142, 34, 148, ?

Explanation:

The pattern is alternative difference,

26 + 3 = 29, 29 + 5 = 34, 34 + 7 = 41

138 + 4 = 142, 142 + 6 = 148

6). 171, 172, 174, 183, ? , 872

Explanation:

The pattern is, +10, +21, +32, +43, +54,…

7). 142, 156, 114, ? , 86, 212

Explanation:

The pattern is, +(1*14), -(3*14), +(5*14), -(7*14), +(9*14),…

Â 8). 13, 23, 67, 131, ? , 779

Explanation:

The pattern is, *2 â€“ 3, *3 â€“ 2(alternatively)

Â 9). 47, 78, ? 156, 199, 246

Explanation:

The difference is, 31, 37, 41, 43, 47,.. (Prime numbers)

10). 118, 124, 136, ? , 178, 208

Explanation:

The difference is, 6, 12, 18, 24, 30,..

11). 23, 27, 39, 59, ? , 123

Explanation:

The difference of difference is 8, 8, 8,..

12). 70, 69, 73, 64, 80, 55 , ?

Explanation:

The pattern is, -12, +22, -32, +42, -52, +62,..

13). 8, 18, 50, 98, ? , 338

Explanation:

The pattern is, (prime no)2 Ã— 2

(ie)., 22 Ã— 2, 32 Ã— 2, 52 Ã— 2, 72 Ã— 2, 112 Ã— 2, 132 Ã— 2,…

14). -9, -2, 17, 54, ? , 206

Explanation:

The pattern is, 13 â€“ 10, 23 â€“ 10, 33 â€“ 10, 43 â€“ 10, 53 â€“ 10, 63 â€“ 10

15). 39, 79, 119, 159, 199, ?

Explanation:

The difference is, 40, 40, 40,…

16). 7, ? , 7, 17, 63, 309

Explanation:

The pattern is, *1 â€“ 2, *2 â€“ 3, *3 â€“ 4, *4 â€“ 5, *5 â€“ 6,..

17). 17, 22, 39, 76, 141, ?

Explanation:

The difference of difference is, 12, 20, 28, 36,..

18). 14, 526, 183, 399, 274, ?

Explanation:

The pattern is, +83, -73, +63, -53, +43,..

19). 16, 21, 76, 171, 296, ?

Explanation:

The difference of difference is, 50, 40, 30, 20

20). 53, 51.4, 48.2, 41.8, ? , 3.4

Explanation:

The difference is, *2

21). 8, 7, 13, 38, 151, ?

Explanation:

The pattern is, *1 â€“ 1, *2 â€“ 1, *3 â€“ 1, *4 â€“ 1, *5 â€“ 1,..

22). 5760, ? , 192, 48, 16, 8

Explanation:

The pattern is, Ã· 6, Ã· 5, Ã· 4, Ã· 3, Ã· 2

23). 140, 135, 152, 115, ? , 79

Explanation:

The pattern is,

140 + 12 = 152, 152 + 28 = 180

135 â€“ 20 = 115, 115 â€“ 36 = 79

24). 101, 113, 119, 125, 134, ?

Explanation:

The pattern is,

The difference is, 12, 6, 6, 9, 18

(ie.,) 12*(1/2) = 6, 6*1 = 6, 6*(3/2) = 9, 9*2 = 18

Directions (Q. 1 â€“ 10) Find the wrong term in the following number series.

1). 2, 11, 53, 208, 623

Explanation:

The correct series is, 2, 11, 53, 209, 623

The pattern is, *6 â€“ 1, *5 â€“ 2, *4 â€“ 3, *3 â€“ 4,..

2). 50, 39, 53, 35, 56, 32, 59

Explanation:

The correct series is, 50, 39, 53, 35, 56, 31, 59

The pattern is alternative difference,

50 + 3 = 53, 53 + 3 = 56, 56 + 3 = 59,

39 â€“ 4 = 35, 35 – 4 = 31

3). 400, 200, 210, 300, 600, 1500, 4500

Explanation:

The correct series is, 400, 200, 200, 300, 600, 1500, 4500

The pattern is, *0.5, *1, *1.5, *2, *2.5, *3

4). 11, 5, 4, 4.5, 7, 14, 42

Explanation:

The correct series is, 11, 5, 4, 4.5, 7, 15, 42

The pattern is,

(11-1)*0.5 = 5, (5 â€“ 1)*1 = 4, (4 â€“ 1)*1.5 = 4.5, (4.5 â€“ 1)*2 = 7, (7 â€“ 1)*2.5 = 15, (15 â€“ 1)*3 = 42

5). 59, 60, 61, 64, 79, 185, 1129

Explanation:

The correct series is, 59, 60, 61, 64, 79, 184, 1129

The difference is, *1, *3, *5, *7, *9,..

6). 26, 27, 34, 58, 106, 186, 306

Explanation:

The correct series is, 26, 26, 34, 58, 106, 186, 306

The difference of difference is, 8, 8, 8, 8,…

7). 291, 147, 75, 39, 22, 12, 7.5

Explanation:

The correct series is, 291, 147, 75, 39, 21, 12, 7.5

The pattern is,

(291 + 3)/2 = 147, (147 + 3)/2 = 75, (75 + 3)/2 = 39, (39 + 3)/2 = 21, (21 + 3)/2 = 12, (12 + 3)/2 = 7.5

8). 1, 3, 9, 31, 129, 652, 3913

Explanation:

The correct series is, 1, 3, 9, 31, 129, 651, 3913

The pattern is, *1 + 2, *2 + 3, *3 + 4, *4 + 5, *5 + 6, *6 + 7,…

Â 9). 330, 80, 280, 120, 250, 130, 240Â

Explanation:

The correct series is, 330, 80, 280, 120, 250, 140, 240

The pattern is alternative difference,

330 â€“ 50 = 280, 280 â€“ 30 = 250, 250 â€“ 10 = 240

80 + 40 = 120, 120 + 20 = 140

10). 4, 12, 21, 55, 110, 326, 375

Explanation:

The correct series is, 4, 12, 21, 85, 110, 326, 375

The pattern is, +23, +32, +43, +52, +63, +72,…