Number series is a sequence or orderly arrangement formed with numbers. Number Series is the one of the most important topic of Mathematics. In the number series questions, the series are based on sequences of numbers that follow a logical pattern based on basic arithmetic concepts and we have to detect that concept then predict the next number in the sequence by following the same logic.
Practice Questions For Number Series
Q1) 3 2 2 5 5 5 7 8 8 9 11 11 ?
A) 12
B) 11
C) 9
D) 14
Solution :
Q2) 7 9 8 6 10 9 5 11 10 ? 12
A) 4
B) 11
C) 56
D) 5
Solution :
Q3) 1 3 2 6 3 11 4 18 5 ?
A) 27
B) 25
C) 23
D) 29
Solution :
Q4) 13 17 23 29 31 37 ??
A) 22
B) 41
C) 19
D) 23
Solution :
Q5) Look at this series: 2, 1, (1/2), (1/4), ... What number should come next?
A) (1/3)
B) (1/8)
C) (2/8)
D) (1/16)
Solution :
to say, the number is divided by 2 successively to get the next result.
4/2 = 2
2/2 = 1
1/2 = 1/2
(1/2)/2 = 1/4
(1/4)/2 = 1/8 and so on.
Q6) 26, 12, 10, 16, ?
A) 50
B) 52
C) 53
D) 56
Solution :
Q7) Look carefully for the pattern, and then choose which pair of numbers comes next.
2 44 4 41 6 38 8
A) 10 12
B) 35 32
C) 34 9
D) 35 10
Solution :
Q8) What should come in place of the question mark '?' in the following number series?
2916, 972, ?, 108, 36, 12
A) 324
B) 234
C) 248
D) 391
Solution :
972 ÷ 3 = 324 = ?
324 ÷ 3 = 108
108 ÷ 3 = 36
36 ÷ 3 = 12
Q9) 4, 6, 9, 13,
A) 15
B) 12
C) 18
D) 17
Solution :
Q10) 210 209 213 186 202 (?)
A) 138
B) 77
C) 177
D) 327
Solution :
210 – 1³= 209
209 + 2² = 213
213 – 3³ = 186
186 + 4² = 202
202 – 5³ = 202 – 125 = 77
