शब्द (EQUATION) के अक्षरों को कितने तरीकों से व्यवस्थित किया जा सकता है कि स्वर केवल विषम स्थानों पर आएं?
In how many ways can the letters of (EQUATION) be arranged so that vowels occupy only odd positions?
Explanation opens after your attempt
Correct Answer
A. (1440)
Concept
There are (4) odd positions among (8), and the (4) vowels occupy them in (4!) ways, while consonants also arrange in (4!) ways. When counts match, arrange groups separately.
Why this answer is correct
The correct answer is A. (1440). There are (4) odd positions among (8), and the (4) vowels occupy them in (4!) ways, while consonants also arrange in (4!) ways. When counts match, arrange groups separately.
Exam Tip
(8) स्थानों में (4) विषम स्थान हैं और (4) स्वर उन्हीं में (4!) तरीकों से आएंगे, व्यंजन भी (4!) तरीकों से। स्थान की समान संख्या दिखे तो सीधे अलग-अलग व्यवस्थित करें।
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