What should come in place of the question mark(?) in the given series?
What should come in place of the question mark(?) in the given series?
दी गई श्रृंखला में प्रश्न चिह्न (?) के स्थान पर क्या आना चाहिए?हज
129, 128, 124, 115, 99, ?
Detailed Solution & Logic
Correct Answer:
74
Series: 129, 128, 124, 115, 99, ?
First find the differences:
129 → 128 = -1
128 → 124 = -4
124 → 115 = -9
115 → 99 = -16
These follow a pattern of perfect squares:
$1^2, 2^2, 3^2, 4^2$
Next difference will be:
$5^2 = 25$
So, next term:
99 − 25 = 74
Correct Answer: 74
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