Select the number which can come in place of the question mark…
Select the number which can come in place of the question mark (?) in the following series.
निम्नलिखित श्रृंखला में प्रश्नवाचक चिन्ह (?) के स्थान पर कौन-सी संख्या आएगी?
80, 79, 75, 66, ?, 25
Detailed Solution & Logic
Correct Answer:
50
Observe the pattern:
- 80 - 1 = 79
- 79 - 4 = 75
- 75 - 9 = 66
- 66 - 16 = 50
- 50 - 25 = 25
The numbers being subtracted are:
$1^2,\;2^2,\;3^2,\;4^2,\;5^2$
Hence, the missing number is 50.
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