अनुक्रम \(1,-2,4,-8,16,\ldots\) में आठवाँ पद क्या होगा?
What will be the eighth term in the sequence \(1,-2,4,-8,16,\ldots\)?
Explanation opens after your attempt
D. (-128)
Concept
Each term is multiplied by (-2), so the eighth term is ((-2)7=-128). Exam tip: track both sign and power.
Why this answer is correct
The correct answer is D. (-128). Each term is multiplied by (-2), so the eighth term is ((-2)7=-128). Exam tip: track both sign and power.
Exam Tip
हर बार (-2) से गुणा हो रहा है इसलिए आठवाँ पद ((-2)7=-128) है। संकेत और घात दोनों साथ देखें।
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