Question
Download Solution PDFManisha typed a six-digit number but the two 4s she typed were not visible. The number visible is 5005. How many different six-digit numbers can there be?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Missing digits = 4, 4
Visible number = 5005
Formula used:
Missing digits can be placed at any position in a 6-digit number.
Total positions = 6
Positions for missing digits = 6C2
Calculation:
6C2 = \(\dfrac{6 \times 5}{2!}\)
⇒ \(\dfrac{6 \times 5}{2}\)
⇒ 15
∴ The correct answer is option (3).
Last updated on Dec 9, 2024
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