The series given below contains a sequence of numbers. Accordingly identify the incorrect combination. 3, 12, 48, 194, 768, 3074
194, 3074
Logic: Each term should be the previous term multiplied by 4.
Step 1 – build the correct series:
\(3 \times 4 = 12\) ✓
\(12 \times 4 = 48\) ✓
\(48 \times 4 = 192\) (the series shows 194 ✗)
\(192 \times 4 = 768\) ✓
\(768 \times 4 = 3072\) (the series shows 3074 ✗)
Step 2 – identify the incorrect numbers:
The terms 194 and 3074 are both wrong (they should be 192 and 3072).
Hence the incorrect combination is (194, 3074).
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