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JEE Mains · Maths · STD 11 - 6. permutation and combination

\(3\) અથવા \(4\) વડે વિભાજ્ય હોય પરંતુ \(48\) વડે વિભાજ્ય ન હોય તેવી \(3\) અંકી સંખ્યાઓની સંખ્યા \(............\) છે.

  1. A \(472\)
  2. B \(432\)
  3. C \(507\)
  4. D \(400\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(432\)

Step-by-step Solution

Detailed explanation

Total \(3\) digit number \(=900\) Divisible by \(3=300\) (Using \(\frac{900}{3}=300\) ) Divisible by \(4=225\) (Using \(\frac{900}{4}=225\) ) Divisible by \(3 \& 4=108, \ldots\). (Using \(\frac{900}{12}=75\) ) Number divisible by either \(3\) or \(4\) \(=300+2250-75=450\) We…
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