Odd Man Out and Series: Formulas, Shortcuts and Solved Examples — MCQs with Answers (Set 2)

This series alternates: add 8, then subtract 4, and repeat. Check each step: 31 to 38 is +7 (should be +8), 38 to 35 is -3 (should be -4), 35 to 43 is +8 (OK), 43 to 39 is -4 (OK), 39 to 47 is +8 (OK), 47 to 43 is -4 (OK). One or more steps near 38 break this pattern. So 38 is the wrong number.

This series lists consecutive perfect cubes, starting from 7^3. Check each term: 7^3=343, 8^3=512, 9^3=729, 10^3=1000. Following this pattern, the next base number is 11. So the next term is 11^3=1331.

This series lists consecutive perfect cubes, starting from 5^3. Check each term: 5^3=125, 6^3=216, 7^3=343, 8^3=512. Following this pattern, the next base number is 9. So the next term is 9^3=729.

This series lists consecutive perfect cubes, starting from 1^3. Check each term: 1^3=1, 2^3=8, 3^3=27, 4^3=64. Following this pattern, the next base number is 5. So the next term is 5^3=125.

This series lists consecutive perfect cubes, starting from 3^3. Check each term: 3^3=27, 4^3=64, 5^3=125, 6^3=216. Following this pattern, the next base number is 7. So the next term is 7^3=343.

This series lists consecutive perfect cubes, starting from 8^3. Check each term: 8^3=512, 9^3=729, 10^3=1000, 11^3=1331. Following this pattern, the next base number is 12. So the next term is 12^3=1728.

This series lists consecutive perfect cubes, starting from 4^3. Check each term: 4^3=64, 5^3=125, 6^3=216, 7^3=343. Following this pattern, the next base number is 8. So the next term is 8^3=512.

This series lists consecutive perfect cubes, starting from 2^3. Check each term: 2^3=8, 3^3=27, 4^3=64, 5^3=125. Following this pattern, the next base number is 6. So the next term is 6^3=216.

This series lists consecutive perfect cubes, starting from 6^3. Check each term: 6^3=216, 7^3=343, 8^3=512, 9^3=729. Following this pattern, the next base number is 10. So the next term is 10^3=1000.

This series lists consecutive perfect squares, starting from 8^2. Check each term: 8^2=64, 9^2=81, 10^2=100, 11^2=121, 12^2=144. Following this pattern, the next base number is 13. So the next term is 13^2=169.

This series lists consecutive perfect squares, starting from 9^2. Check each term: 9^2=81, 10^2=100, 11^2=121, 12^2=144, 13^2=169. Following this pattern, the next base number is 14. So the next term is 14^2=196.

This series lists consecutive perfect squares, starting from 7^2. Check each term: 7^2=49, 8^2=64, 9^2=81, 10^2=100, 11^2=121. Following this pattern, the next base number is 12. So the next term is 12^2=144.

This series lists consecutive perfect squares, starting from 6^2. Check each term: 6^2=36, 7^2=49, 8^2=64, 9^2=81, 10^2=100. Following this pattern, the next base number is 11. So the next term is 11^2=121.

This series lists consecutive perfect squares, starting from 1^2. Check each term: 1^2=1, 2^2=4, 3^2=9, 4^2=16, 5^2=25. Following this pattern, the next base number is 6. So the next term is 6^2=36.

This series lists consecutive perfect squares, starting from 4^2. Check each term: 4^2=16, 5^2=25, 6^2=36, 7^2=49, 8^2=64. Following this pattern, the next base number is 9. So the next term is 9^2=81.

This series lists consecutive perfect squares, starting from 5^2. Check each term: 5^2=25, 6^2=36, 7^2=49, 8^2=64, 9^2=81. Following this pattern, the next base number is 10. So the next term is 10^2=100.

This series lists consecutive perfect squares, starting from 2^2. Check each term: 2^2=4, 3^2=9, 4^2=16, 5^2=25, 6^2=36. Following this pattern, the next base number is 7. So the next term is 7^2=49.

Each term in this series equals the previous term times 2. Check this rule against the given terms: 5×2=10, 10×2=20, 20×2=40, 40×2=80. The rule holds throughout the series. Apply it once more: 80×2=160. So the next term is 160.

Each term in this series equals the previous term times 2. Check this rule against the given terms: 3×2=6, 6×2=12, 12×2=24, 24×2=48. The rule holds throughout the series. Apply it once more: 48×2=96. So the next term is 96.

Each term in this series equals the previous term times 3. Check this rule against the given terms: 2×3=6, 6×3=18, 18×3=54, 54×3=162. The rule holds throughout the series. Apply it once more: 162×3=486. So the next term is 486.

Each term in this series equals the previous term times 3. Check this rule against the given terms: 3×3=9, 9×3=27, 27×3=81, 81×3=243. The rule holds throughout the series. Apply it once more: 243×3=729. So the next term is 729.

Each term in this series equals the previous term times 4. Check this rule against the given terms: 3×4=12, 12×4=48, 48×4=192, 192×4=768. The rule holds throughout the series. Apply it once more: 768×4=3072. So the next term is 3072.

Each term in this series equals the previous term times 4. Check this rule against the given terms: 6×4=24, 24×4=96, 96×4=384, 384×4=1536. The rule holds throughout the series. Apply it once more: 1536×4=6144. So the next term is 6144.

Each term in this series equals the previous term times 2. Check this rule against the given terms: 4×2=8, 8×2=16, 16×2=32, 32×2=64. The rule holds throughout the series. Apply it once more: 64×2=128. So the next term is 128.

Each term in this series equals the previous term times 3. Check this rule against the given terms: 1×3=3, 3×3=9, 9×3=27, 27×3=81. The rule holds throughout the series. Apply it once more: 81×3=243. So the next term is 243.