Series & Patterns
123 questions available
FILTER BY SUBTOPIC
Q101.Complete the following series: 10, 15, 20, 25, _______ ?
Correct Answer: A
The series increases by +5 each time (multiples of 5). 25 + 5 = 30.
Q102.What is the next term in the sequence: S, U, W, Y, _________?
Correct Answer: C
The sequence skips one letter: S(19), U(21), W(23), Y(25). Next is A(27, i.e., 1st letter of next cycle).
Q103.Complete the given series: 7, 49, 6, 36, 5, ?
Correct Answer: C
The series alternates a number with its square: 7, 7²=49, 6, 6²=36, 5, 5²=25.
Q104.What will come next: 7 + 2 - 1 = H, 22 + 6 - 5 = W, 11 + 6 - 2 = ?
Correct Answer: C
The arithmetic sum gives the position in the alphabet: 11+6-2 = 15. The 15th letter of the alphabet is O.
Q105.Complete the given series: 3, 8, 15, 24, ?
Correct Answer: D
The differences are increasing odd numbers: +5, +7, +9, +11. 24 + 11 = 35.
Q106.What comes next in the series: 101, 105, 111, 119, ?
Correct Answer: D
Differences are +4, +6, +8, so the next difference is +10: 119 + 10 = 129.
Q107.Complete the series: 4, 8, 24, 96, _________?
Correct Answer: C
The factors of multiplication increase sequentially: x2, x3, x4, x5. So, 96 x 5 = 480.
Q108.Write the next term in the series: 6, 11, 12, 11, 18, 11, 24, 11, ?
Correct Answer: D
This is an alternating series where 11 is placed in even positions, and the main sequence increases by 6: 6, 12, 18, 24, 30.
Q109.Complete the series: BC, GC, HN, ___________
Correct Answer: C
Following position shifts of first and second letters, HU represents the logical next term.
Q110.What will come next in the following series: 17, 35, 72, 147, ______?
Correct Answer: C
The pattern is multiplying by 2 and adding an increasing integer: 17*2 + 1 = 35; 35*2 + 2 = 72; 72*2 + 3 = 147; 147*2 + 4 = 298.
Q111.What will come next in the alphabet series: A, C, F, J, ______?
Correct Answer: B
The gaps between letters increase by 1 each time: A (+2) = C; C (+3) = F; F (+4) = J; J (+5) = O.
Q112.What will come next: 20, 25, 23, 28, 26, 31, 29, 34, ______?
Correct Answer: B
The pattern alternates: add 5, then subtract 2. 20+5=25; 25-2=23; 23+5=28; 28-2=26; 26+5=31; 31-2=29; 29+5=34; 34-2=32.
Q113.What will come next in the following series: 4, 12, 36, 108, ______?
Correct Answer: C
Each term is multiplied by 3 to get the next: 4*3=12; 12*3=36; 36*3=108; 108*3=324.
Q114.What comes next in the arithmetic sequence: 13, 15, 17, 19, 21, ______?
Correct Answer: C
The sequence increases by a common difference of 2: 13, 15, 17, 19, 21, 23.
Q115.What comes next in the series: 19, 38, 57, ______?
Correct Answer: B
This series consists of consecutive multiples of 19: 19×1=19, 19×2=38, 19×3=57, 19×4=76.
Q116.Look at this series: QPO, NML, KJI, __________, EDC. What letter group fills the blank?
Correct Answer: A
This series consists of 3-letter groups in reverse alphabetical order: QPO, NML, KJI. The next group in reverse alphabetical order is HGF, followed by EDC.
Q117.Find the odd term in the sequence: A2, C6, E10, G12, I18, ...
Correct Answer: C
The letter positions are A(1), C(3), E(5), G(7), I(9). The number is position × 2 except G12: A(1*2=2), C(3*2=6), E(5*2=10), I(9*2=18). G should have been G14 instead of G12.
Q118.If 2x2=44, 2x3=49, and 3x4=916, then 2x4 = ?
Correct Answer: A
The rule is representing (First number)² and (Second number)² written together: 2²=4 and 3²=9 → 49. For 2x4: 2²=4 and 4²=16 → 416.
Q119.What is the next number in the series: 4, 8, 24, 96, ______?
Correct Answer: D
Multiply by increasing consecutive integers: 4×2=8; 8×3=24; 24×4=96; 96×5=480.
Q120.What number comes next in the series: 63, 3, 44, 0, 91, ______?
Correct Answer: D
Each number is followed by the difference of its digits: 63 (6-3=3); 44 (4-4=0); 91 (9-1=8). So next is 8.