TS EAMCET · Maths · Permutation Combination
The sum of all the 4-digit numbers formed by taking all the digits from \(2,3,5,7\) without repetition, is
- A 331122
- B 123312
- C 113322
- D 132132
Answer & Solution
Correct Answer
(C) 113322
Step-by-step Solution
Detailed explanation
2 comes at the last place 6 times. Similarly 3, 5, 7 Required sum \(=(2+3+5+7) \times 6 \times 1111 \equiv 113322\).
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