Topic MCQs · Mathematics
40 MCQs on Odd Man Out and Series sit in the GK360 bank, collected from 1 solved papers. Below are the top 40 distinct questions — repeats across papers merged into their strongest version — with the correct answer marked, an explanation where the bank carries one, and the source paper named on every card.
Correct Answer: 12
All the other values are prime numbers; 12 is the only composite value in the list, so 12 does not belong.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 21
The differences repeat 4, 2, 2, so after 18 the next term is 22, not 21.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 14
The differences alternate 2, 4, so after 11 the next term is 15, not 14.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 23
All the other values are perfect squares; 23 is not a square.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 28
All the other values are multiples of 3; 28 is not a multiple of 3.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 81
All the other values are prime numbers; 81 = 9 x 9 is composite.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 72
All the other values are perfect squares; 72 is not a square.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 54
All the other values are multiples of 5; 54 is not a multiple of 5.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 20
All the other values are perfect squares; 20 is not a square.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 100
All the other values are perfect cubes; 100 is not a cube.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 50
The differences are the squares 4, 9, 16, 25, 36, so after 30 comes 55, not 50.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 427
In every other number the last digit equals the middle digit minus the first digit (for example 385: 8 - 3 = 5); for 427, 2 - 4 is not 7.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 751
In every other number the last digit equals the middle digit minus the first digit (for example 835: 8 - 3 = 5); for 751, 5 - 7 is not 1.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 383
In every other number the middle digit equals the product of the outer digits (for example 482: 4 x 2 = 8); for 383, 3 x 3 = 9, not 8.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 64
The differences increase by 2 each time (3, 5, 7, 9, 11, 13), so after 50 comes 65, not 64.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 102
The differences increase by 2 each time (9, 11, 13, 15, 17), so after 84 comes 103, not 102.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 324
The digits of every other number add up to 10, but the digits of 324 add up to 9.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 5000
From the third term on, each term is the product of the previous two (2 x 5 = 10, 5 x 10 = 50, 10 x 50 = 500), so after 500 comes 25000, not 5000.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 18
The differences increase by 1 each time (1, 2, 3, 4, 5, 6, 7), so after 14 comes 19, not 18.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 279
All the other values are multiples of 11; 279 is not divisible by 11.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 18.5
The pattern multiplies by 1.5 then divides by 3 alternately, so after 9 comes 13.5, not 18.5.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 634
The pattern adds 23 then subtracts 17 alternately, so after 611 comes 594, not 634.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 24
The divisors decrease by 2 each time (12, 10, 8, 6, 4, 2), so after 48 comes 8, not 24.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 124
The series is the cubes 1, 8, 27, 64, 125, 216, 343, so 124 should be 125.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 9
Two series are interleaved (5, 6, 7, 8 and 16, 16, 16), so the last term should be 8, not 9.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 40
The differences alternate 7, 5, so after 37 comes 42, not 40.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 150
The terms are products of consecutive integers (7 x 8, 8 x 9, 9 x 10, 10 x 11, 11 x 12, 12 x 13 = 156), so 150 should be 156.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 47
The differences increase by 3 each time (5, 8, 11, 14, 17, 20), so after 32 comes 46, not 47; solved example (1) on p. 777 confirms this pattern.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 36
All the other values are squares of odd numbers (5, 7, 9, 11, 13, 15); 36 is the square of the even number 6.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 91
The differences are the squares 1, 4, 9, 16, 25, 36, so after 56 comes 92, not 91.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 34
Subtract 1, 3, 5, 7, 9, 11 successively, so after 43 comes 36, not 34; solved example (2) on p. 777 confirms this pattern.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 0
The differences fall by 5 each step (-20, -25, -30, -35, -40, -45), so after 30 comes -5, not 0.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 11
All the other values are composite numbers; 11 is prime.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 165
The differences are the primes 2, 3, 5, 7, 11, 13, so after 153 comes 166, not 165.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 190
All the other values are perfect squares; 190 is not a square.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 100
The differences are the primes with a minus sign (-2, -3, -5, -7, -11, -13), so after 108 comes 97, not 100.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 70
The differences increase by 4 each time (7, 11, 15, 19, 23, 27), so after 55 comes 78, not 70.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 160
Each term doubles and adds 1, so after 79 comes 159, not 160.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: 132
The pattern adds 4 then doubles alternately, so after 64 comes 68, not 132.
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
Correct Answer: None of these
Every value is a cube of a prime number (2, 3, 5, 7, 11), so no term is the odd one out and the answer is "None of these".
From: General Ability: Odd Man Out and Series — Solved MCQs · FPSC
The bank holds 40 questions tagged "Odd Man Out and Series" under Mathematics, drawn from 1 solved papers. After merging the same question asked in multiple papers, 40 are distinct; this page shows the top 40.
They are pulled from the solved papers in the GK360 archive — FPSC papers among them — and every card on this page names its source paper and year, so you can open the full paper from the Past Papers archive.
Yes — 40 of the 40 questions shown carry a written explanation under the answer; the rest show the verified correct answer for revision. Every answer passed GK360's three-way check (printed key, worked material, standard fact).
Work through the questions on this page first, note the ones you miss, then attempt the same topic under a timer with the "Practice this topic" button above — it starts a timed Quiz Builder attempt on this exact subject and topic right away.
Explore GK360
Use these important GK360 sections to prepare for PPSC, FPSC, one paper exams, subject-wise MCQs, solved past papers and current affairs.
