How much equal decrease is there in the sequence (16,12,8,4,\ldots)?
Answer and explanation
Correct answer: 4
Each successive term is 4 less than the preceding term: 12−16=−4, 8−12=−4, and 4−8=−4. Therefore, the magnitude of the equal decrease is 4. Note that the common difference of the AP is −4, whereas the decrease asked here is 4. Exam tip: subtract consecutive terms to verify the equal decrease.
Frequently asked questions
What is the correct answer to this question?
4
Why is this the correct answer?
Each successive term is 4 less than the preceding term: 12−16=−4, 8−12=−4, and 4−8=−4. Therefore, the magnitude of the equal decrease is 4. Note that the common difference of the AP is −4, whereas the decrease asked here is 4. Exam tip: subtract consecutive terms to verify the equal decrease.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Arithmetic Progressions (AP). Topic: Introduction to APs and common difference..
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