Quiz On Numerical Series
1. 16, 33, 65, 131, 261,
(....)
A. 523
B. 521
C.
613
D. 721
2. 10, 5, 13, 10, 16,
20, 19, (....)
A.
22
B. 40
C. 38
D. 23
3. 1, 4, 9, 16, 25, 36,
49, (....)
A.
54
B. 56
C.
64
D. 81
4. 2, 4, 12, 48, 240,
(....)
A.
960
B.
1440
C. 1080
D.
1920
5. 8, 7, 11, 12, 14, 17,
17, 22, (....)
A.
27
B. 20
C.
22
D. 24
6. 11, 13, 17, 19, 23,
29, 31, 37, 41, (....)
A.
43
B. 47
C.
53
D. 51
.
7. 8, 24, 12, 36, 18,
54, (....)
A.
27
B.
108
C.
68
D. 72
8. 2, 6, 12, 20, 30, 42,
56, (....)
A.
61
B. 64
C.
72
D. 70
9. 4, -8, 16, -32, 64,
(....)
A.
128
B.
-128
C.
192
D.
-192
10. 7, 26, 63, 124, 215, 342, (....)
A.
481
B.
511
C.
391
D. 421
Answers with Explanation:-
1. A
Explanation:
Each number is twice
the preceding one with 1 added or subtracted alternatively.
So, the next number is
(2 x 261 + 1) = 523.
2. B
Explanation:
There are two series
(10, 13, 16, 19) and (5, 10, 20, 40), one increasing by 3 and the other
multiplied by 2.
3. C
Explanation:
Numbers are 1^2, 2^2,
3^2, 4^2, 5^2, 6^2, 7^2.
So, the next number is
8^2 = 64.
4. B
Explanation:
Go on multiplying the
given numbers by 2, 3, 4, 5, 6.
So, the correct next
number is 1440.
5. B
Explanation:
There are two series
(8, 11, 14, 17, 20) and (7, 12, 17, 22) increasing by 3 and 5 respectively.
6. A
Explanation:
Numbers are all primes.
The next prime is 43
7. A
Explanation:
Numbers are
alternatively multiplied by 3 and divided by 2.
So, the next number =
54 ÷ 2 = 27.
8. C
Explanation:
The pattern is 1 x 2, 2
x 3, 3 x 4, 4 x 5, 5 x 6, 6 x 7, 7 x 8.
So, the next number is
8 x 9 = 72.
9. B
Explanation:
Each number is the
proceeding number multiplied by -2.
So, the required number
is -128.
10. B
Explanation:
Numbers are (2^3 - 1),
(3^3 - 1), (4^3 - 1), (5^3 - 1), (6^3 - 1), (7^3
- 1) etc.
So, the next number is (8^3 - 1) = (512 - 1) = 511.
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