एक ट्रेन पहले घंटे (80) किलोमीटर चलती है और हर अगले घंटे (8) किलोमीटर अधिक चलती है। (8) घंटे में कुल दूरी कितनी होगी?
A train travels (80) km in the first hour and (8) km more each next hour. What is the total distance in (8) hours?
Explanation opens after your attempt
C. (864)
Concept
The distances form the AP \(80,88,96,\ldots\) and \(S_8=864\). Exam tip: treat the distance of each hour as a separate term.
Why this answer is correct
The correct answer is C. (864). The distances form the AP \(80,88,96,\ldots\) and \(S_8=864\). Exam tip: treat the distance of each hour as a separate term.
Exam Tip
दूरी \(80,88,96,\ldots\) समान्तर श्रेणी है और \(S_8=864\)। परीक्षा में प्रति घंटे की दूरी को अलग-अलग पद मानें।
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