SBI CLERK 2018 Quantitative Aptitude Quiz No- 8 Number Series
On this quiz no 08 you will practice Number Series Questions for bank exams like SBI Clerk Pre 2018, IBPS Clerk Pre, IBPS RRB 2018 and other 2018 banking exams with detailed Solution, all types of questions with tricky solution at free of cost
In each of these questions a number series is given. In each series
only one number is wrong. Find out the wrong number.
1.50 51 47 56 42 65 29
1. 51
2. 47
3. 56
4. 42
5. 65
2.3 9 23 99 479 2881 20159
1. 9
2. 23
3. 99
4. 479
5. 2881
3.4 6 9 20 52.5 160.5
1. 6
2. 4
3. 20
4. 9
5. 5
4.1 3 6 11 20 39 70
1. 3
2. 39
3. 11
4. 20
5. 6
5.2 13 27 113 561 3369 23581
1. 27
2. 13
3. 113
4. 561
5. 3369
6.7 16 27 40 46
1. 7
2. 16
3. 27
4. 40
5. 46
7.729 1331 2497 3375 4913
1. 729
2. 1331
3. 3375
4. 2497
5. 4913
8.80 119 166 221 223
1. 80
2. 119
3. 166
4. 192
5. 223
9.8 8.5 11.5 14 17
1. 8
2. 5
3. 5
4. 14
5. 17
10.439 778 1456 2812 5624
1. 439
2. 778
3. 1456
4. 2812
5. 5624
Answer
1).Answer is: D
The series is 50 + 1^2 = 51, 51 – 2^2 = 47, 47 + 3^2 = 56, 56 – 4^2 = 40, 40 + 5^2 = 65, 65 –
6^2 = 29.
Hence, there should be 40 in place of 42.
2).Answer is: C
The series is 3 × 2 + 3 = 9, 9 × 3 – 4 = 23, 23 × 4 + 5 = 97, 97 × 5 – 6 = 479, 479 × 6 + 7 =
2881, 2881 × 7 – 8 = 20159
Hence, there should be 97 in place of 99
3).Answer is: A
The series is x0.5 + 0.5, x1 + 1, x 1.5 + 1.5, x 2 + 2, x 2.5 + 2.5, x 3 + 3…
Hence, there should be 5 in place of 6.
4).Answer is: B
The series is 1 × 2 + 1 = 3, 3 × 2 + 0 = 6, 6 × 2 – 1 = 11, 11 × 2 – 2 = 20, 20 × 2 – 3 = 37, 37
× 2 – 4 = 70.
Hence, there should be 37 in place of 39.
5).Answer is: B
The series is 2 × 2 + 7 = 11, 11 × 3 – 6 = 27, 27 × 4 + 5, = 113, 113 × 5 – 4 = 561, 561 × 6 +
3 = 3369, 3369 × 7 – 2 = 23581.
Hence, there should be 11 in place of 13.
6).Answer is: E
The series is 5 × 1 + 2 = 7, 6 × 2 + 4 = 16, 7 × 3 + 6 = 27, 8 × 4 + 8 = 40, 9 × 5 + 10 = 55.
Hence, there should be 55 in place of 46.
Alternate Method: +9, +11, +13, +15
7).Answer is: D
The series is 9^3, 11^3, 13^3, 15^3, 17^3,
Hence, there should be 2197 in place of 2497.
8).Answer is: E
The series is 9^2 – 1, 11^2 – 2, 13^2 – 3, 15^2 – 4, 17^2 – 5,
Hence, there should be 284 in place of 223
9).Answer is: B
The series is 8 + 1.5 = 9.5, 9.5 + 2 = 11.5, 11.5 + 2.5 = 14, 14 + 3 = 17
Hence, there should be 9.5 in place of 8.5.
10.Answer is: E
The series is +339, +678, +1356, +2712,
Hence, there should be 5524 in place of 5624.
