Hello friends in this post we are going to discuss about Number Series Multiple choice question with answer | Number Series Question Answer Dumps | Number Series Objective type question with answers
For More MCQ : Click Here
Problem 1 : 7, 11, 15, 19, 23, ?
Solution :
Look at the series and try to identify what is pattern?
Series is in increasing (ascending) order.
How much added in 7 to get 11? -> 4
How much added in 11 to get 15? -> 4
How much added in 15 to get 19? -> 4
How much added in 19 to get 23? -> 4
To find number in place of ? we need to add 4 to 23.
23+4=27.
Answer is 27.
Problem 2 : 8, 12, 17, 23, 30, ?
Solution :
Look at the series and try to identify what is pattern?
All numbers are increasing order.
How much added in 8 to get 12-> 4
How much added in 12 to get 17-> 5
How much added in 17 to get 23 -> 6
How much added in 23 to get 30-> 7
o find number in place of ? we need to add 8 in 30
30+8 = 38
Answer is 38
Problem 3 : 45, 35, 25, 15, ?
Solution :
Look at the series and try to identify what is pattern?
It is in decreasing (descending) order.
How much to be subtracted from 45 to get 35 -> 10
How much to be subtracted from 35 to get 25 -> 10
How much to be subtracted from 25 to get 15 -> 10
To find number in place of ? we need to subtract 10 from 15
15-10 = 5
Answer is 5.
Problem 4 : 72, 63, 54, 45, ?
Solution :
Look at the series and try to identify what is pattern?
It is in decreasing (descending) order.
If look at the numbers carefully and you know table of 9, you can easily figure it out that
all numbers are from table of 9.
How much to be subtracted from 72 to get 63 -> 9
How much to be subtracted from 63 to get 54 -> 9
How much to be subtracted from 54 to get 45 -> 9
To find number in place of ? we need to subtract 9 from 45
45-9 = 36
Answer is 36.
Problem 5: 4, 8, 16, 32, ?
Solution :
Look at the series and try to identify what is pattern?
With which number 4 is to be multiplied to get 8-> 2
With which number 8 is to be multiplied to get 16-> 2
With which number 16 is to be multiplied to get 32-> 2
To find number in place of ? we need to multiply 32 by 2.
32*2 = 64
Answer is 64.
Problem 6: 8, 12, 18, 27, ?
Solution :
Look at the series and try to identify what is pattern?
As it is increasing try to see if addition pattern exists.
Not able to see any pattern of addition and So we will check for multiplication.
So there is multiplication factor 1.5
Note here multiplication factor can be decimal as well.
Pattern: Number is multiplied by 1.5 to get next number.
To find number in place of ? we need to multiply 27 by 1.5
Multiplication by 1.5 means adding half of number to it.
27+ (27/2) = 27+ 13.5 = 40.5
Answer is 40.5
Problem 7: 200, 100, 50, 25, ?
Solution :
Look at the series and try to identify what is pattern?
With which number 200 is to be divided to get 100-> 2
With which number 100 is to be divided to get 50-> 2
With which number 50 is to be divided to get 25-> 2
To find number in place of ? we need to divide 25 by 2.
25/2 = 12.5
Answer is 12.5
Problem 8: 270, 90, 30, ?
Solution :
Look at the series and try to identify what is pattern?
With which number 270 is to be divided to get 90-> 3
With which number 90 is to be divided to get 30-> 3
Pattern: Number is divided by 3 to get next number.
To find number in place of ? we need to divide 30 by 3.
Answer is 10
Problem 9: 7, 13, 19, 29, ?
Solution :
Looking at all terms we can figure out that all are prime number.
Pattern: After current number consecutive 1st prime number is ignored and 2nd prime
number is taken as next number in series
To find number in place of ? we need to find 2nd consecutive prime number after 29.
1 st Prime number after 29 : 31
2 nd Prime number after 29 : 37
Answer is 37
Problem 10: 61, 59, 53, 47, ?
Solution :
Looking at all terms we can figure out that all are prime number.
Pattern: After current number previous consecutive 1st prime number is taken as next
number in series
To find number in place of ? we need to find 1st previous consecutive prime number
before 47.
Previous prime number of 47 : 43
Answer is 43
Problem 11 : 23, 25, 27, 29, 31,?
Solution :
Looking at all terms we can figure out that all are odd numbers.
This can be solve with approach of addition as well as odd number.
Consecutive odd number of 23 ->25
Consecutive odd number of 25 ->27
Consecutive odd number of 27 ->29
Consecutive odd number of 29 ->31
To find number in place of ? we need to find consecutive odd number after 31.
Answer is 33
Problem 12: 60, 45, 58, 43, 56, 41, ?
olution:
Sometimes it may happen that pattern is not in continuous numbers but in alternate
numbers.
Pattern: Even numbers are decreasing on 1st , 3rd and 5th term and odd numbers are
decreasing in 2nd,4th and 6th position
To find number in place of ? we need to find previous consecutive even number before
56.
Answer is 54
Problem 13: 4 ,-8, 16, -32 ,64,?
Solution:
Pattern: Number is multiplied by -2 to get next number.
Answer is -128
Problem 14: 16, 33, 65, 131, 261, ?
Pattern: 1st number multiplied by 2 and 1 added. 2nd number multiplied by 2 and 1 is
subtracted.
Answer is 523
Problem 15: 165, 195, 255, 285, 345, ?
Pattern: 30 added in 1st number to get 2nd number and 60 gets added to get 3rd number.
Subsequently 30 and 60 are added to get next numbers in series.
Answer is 375
Problem 16:7,26,63,124,215,342,?
Pattern: 1 number is added to current number and cube of it is calculated and then 1 is
reduced from it.
Answer is 511
Problem 17 8,7,11,12,14,17,17,22,?
Solution :
Pattern: Alternate number series with add 3 and 5 in both sub-series.
8,11,14,17,20
7,12,17,22.
Answer is 20
Problem 18 – 11, 13, 17, 19, 23, 29, 31, 37, 41, ?
Solution :
Pattern: If you look at all numbers, all are prime numbers and consecutive prime
numbers.
After 41 next prime number -> 43
Answer is 43
Problem 19: 2, 6, 12, 20, 30, 42, 56,?
Pattern: Number is getting added in each number is in sequence 4,6,8,10,12,14,16
Answer is 72
Problem 20: 80, 99, 120, 143, ?
Pattern: Number is increased by 1 and its square is calculated and 1 is reduced from it
Answer is 168