Find out the wrong number in the sequence.
40960, 10240, 2560, 640, 200, 40, 10
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 200
Each term is the previous term divided by 4.
\(40960\div4=10240\), \(10240\div4=2560\), \(2560\div4=640\)
\(640\div4=160\), but the series has 200
\(160\div4=40\) and \(40\div4=10\) carry on correctly from 160
So 200 is the wrong number; it should be 160.