Directions (Q.1-5): What will come in place of the question mark (?) in the following number series?
Q1. 1401, 1402, 705, ?, 77
(a) 243
(b) 242
(c) 244
(d) 246
Q2. 10, 6, 12, 35, ?, 591.75
(a) 130
(b) 129.5
(c) 127.25
(d) 133
(e) None of these
Q3. 390, 198, ?, 54, 30, 18
(a) 102
(b) 100
(c) 98
(d) 96
(e) None of these
Q4. 10, 77, 474, ?, 9556, 28683
(a) 2275
(b) 2465
(c) 2195
(d) 2385
(e) None of these
Q5. 150, 50, 131, 67, 116, ?, 105
(a) 92
(b) 87
(c) 120
(d) 90
(e) None of these
Directions (Q.6-10): In each of these number series one number is wrong. Find out the wrong number.
Q6. 5, 6, 7.5, 9.75, 13.25, 18.4275
(a) 13.25
(b) 9.75
(c) 18.4275
(d) 7.5
(e) None of these
Q7. 13, 25, 41, 62, 85, 113
(a) 62
(b) 25
(c) 113
(d) 85
(e) None of these
Q8. 250, 55, 16, 8.2, 6.1, 6.328
(a) 6.328
(b) 55
(c) 8.2
(d) 6.1
(e) 16
Q9. 18, 54, 162, 491, 1466
(a) 18
(b) 491
(c) 1466
(d) 54
(e) 162
Q10. 7, 8, 24, 106, 361, 986
(a) 81
(b) 106
(c) 304
(d) 24
(e) None of these
Directions (Q.11-15): In each of these questions, a number series is given. Below the series one number is given followed by (a), (b), (c), (d) and (e) You have to complete this series following the same logic as in the original series and answer the question that follows.
Q11. 5, 9, 25, 91, 414, 2282.5
3 (a) (b) (c) (d) (e)
What will come in place of (c) ?
(a) 63.25
(b) 63.75
(c) 64.25
(d) 64.75
(e) None of these
Q12. 15, 9, 8, 12, 36, 170
19 (a) (b) (c) (d) (e)
What will come in place of (b) ?
(a) 18
(b) 16
(c) 22
(d) 24
(e) None of these
Q13. 7, 6, 10, 27, 104, 515
9 (a) (b) (c) (d) (e)
What will come in place of (d) ?
(a) 152
(b) 156
(c) 108
(d) 112
(e) None of these
Q14. 6, 16, 57, 244, 1245, 7506
4 (a) (b) (c) (d) (e)
What will come in place of (d) ?
(a) 985
(b) 980
(c) 1004
(d) 1015
(e) None of these
Q15. 8, 9, 20, 63, 256, 1285
5 (a) (b) (c) (d) (e)
What will come in place of (e)
(a) 945
(b) 895
(c) 925
(d) 845
(e) None of these
Solutions
S6. Ans.(a)
Sol.
The pattern of the series is:
×1.2,×1.25,×1.3,×1.35,×1.4,×1.45..........
S7. Ans.(a)
Sol.
The pattern of series is:
+12,+16,+20,+24,+28
S8. Ans.(d)
Sol.
The series is:
÷5+5,÷5+5,÷5+5,÷5+5…….
S9. Ans.(d)
Sol.
The pattern of series is:
×3+1,×3-3,×3+5,×3-7,×3+9......
S11. Ans.(d)
Sol.
The pattern of the given series is :
5 × 1.5 + 1.5 = 7.5 + 1.5 = 9
9 × 2.5 + 2.5 = 22.5 + 2.5 = 25
25 × 3.5 + 3.5 = 87.5 + 3.5 = 91
91 × 4.5 + 4.5 = 409.5 + 4.5 = 414
Similarly,
(a) 3 × 1.5 + 1.5 = 4.5 + 1.5 = 6
(b) 6 × 2.5 + 2.5 = 15 + 2.5 = 17.5
(c) 17.5 × 3.5 + 3.5 = 61.25 + 3.5 = 64.75
S12. Ans.(b)
Sol.
The pattern of the given series is :
15 × 1 - 1 × 6 = 15 - 6 = 9
9 × 2 - 2 × 5 = 18 - 10 = 8
8 × 3 - 3 × 4 = 24 - 12 = 12
12 × 4 - 4 × 3 = 48 - 12 = 36
36 × 5 - 5 × 2 = 180 - 10 = 170
Similarly,
(a) 19 × 1 - 1 × 6 = 19 - 6 = 13
(b) 13 × 2 - 2 × 5 = 26 - 10 = 16
S13. Ans.(a)
Sol.
The pattern of the given series is :
7 × 1 - 1 = 6
6 × 2 - 2 = 10
10 × 3 - 3 = 27
27 × 4 - 4 = 104
104 × 5 - 5 = 515
Similarly,
(a) 9 × 1 - 1 = 8
(b) 8 × 2 - 2 =14
(c) 14 × 3 - 3 = 39
(d) 39 × 4 - 4 = 152
S15. Ans.(c)
Sol.
The pattern of the given series is :
8 × 1 + 1 = 9
9 × 2 + 2 = 20
20 × 3 + 3 = 63
63 × 4 + 4 = 256
Similarly,
(a) 5 × 1 + l = 6
(b) 6 × 2 + 2 = 14
(c) 14 × 3 + 3 = 45
(d) 45 × 4 + 4 = 184
(e) 184 × 5 + 5 = 925
No comments:
Post a Comment