अंकों (0,1,2,3,4,5,6) से बिना पुनरावृत्ति (4) अंकों की कितनी संख्याएं (5) से विभाज्य होंगी?
How many (4)-digit numbers divisible by (5) can be formed from (0,1,2,3,4,5,6) without repetition?
Explanation opens after your attempt
B. (180)
Concept
The last digit is (0) or (5). Adding the cases gives (120+100=220) numbers.
Why this answer is correct
The correct answer is B. (180). The last digit is (0) or (5). Adding the cases gives (120+100=220) numbers.
Exam Tip
अंतिम अंक (0) या (5) होगा। cases जोड़ने पर (120+100=220) संख्याएं मिलती हैं।
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