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Count the number of three-digit numbers which can be formed from the digits 2, 4, 6, 8 if repetitions of digits is allowed - Mathematics

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प्रश्न

Count the number of three-digit numbers which can be formed from the digits 2, 4, 6, 8 if repetitions of digits is allowed

योग
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उत्तर

Number of digits given = 4 (2, 4, 6, 8)

So the unit place can be filled in 4 ways,

10’s place can be filled in 4 ways and 100’s place can be filled in 4 ways

∴ The unit place, 10’s place and 100’s place together can be filled

(i.e) So the Number of 3 digit numbers = 4 × 4 × 4 = 64 ways

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 4: Combinatorics and Mathematical Induction - Exercise 4.1 [पृष्ठ १६६]

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सामाचीर कलवी Mathematics - Volume 1 and 2 [English] Class 11 TN Board
अध्याय 4 Combinatorics and Mathematical Induction
Exercise 4.1 | Q 4. (i) | पृष्ठ १६६

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