TS EAMCET · Maths · Permutation Combination
Numbers between 1 and 10,000 are formed using the digits 2 and 3 only once and the digit 4 twice. If the numbers thus formed are arranged in increasing order and \(x, y\) represent the ranks of 4324 and 324 respectively then \(x-y=\)
- A 17
- B 31
- C 14
- D 16
Answer & Solution
Correct Answer
(A) 17
Step-by-step Solution
Detailed explanation
Number between 1 and 10000 are formed using digit 2 and 3 only one and digit 4 twice \(\text { one-digit }=\{2,3,4\}=3\) \(\text { Two digit }=\{23,24,32,34,42,43,44\}=7\) Three digit number \(=\{234,243,244,324,342,344\) \(423,432,424,434,442,443\}=12\) Four digit number…
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