নিচের অপশন গুলা দেখুন
- 4
- 6
- 5
- 7
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1 উত্তর
সঠিক উত্তর হচ্ছে: op4
ব্যাখ্যা: A five-digit number is divisible by 125, if the last three digits are divisible by 125. So the possible last three digits are 375 and 875.
5 should come in unit’s place, and 7 should come in ten’s place.
Thousand’s place should contain 3 or 8. You can do it in 2! ways.
Remaining first two digits, you can arrange in 2! ways.
So you can have 2! × 2! = 4 such numbers.
ব্যাখ্যা: A five-digit number is divisible by 125, if the last three digits are divisible by 125. So the possible last three digits are 375 and 875.
5 should come in unit’s place, and 7 should come in ten’s place.
Thousand’s place should contain 3 or 8. You can do it in 2! ways.
Remaining first two digits, you can arrange in 2! ways.
So you can have 2! × 2! = 4 such numbers.