Subject
Bank Exam
Topic
City Bank Ltd. - Management Trainee Officer - 2018
How many positive integers less than 20 are equal to the sum of a positive multiple of 3 and a positive multiple of 4 ?
How many positive integers less than 20 are equal to the sum of a positive multiple of 3 and a positive multiple of 4 ?
ক)
2খ)
5গ)
7ঘ)
10ঙ)
None of theseExplanation
Solution: 20 এর চেয়ে ছোট ধনাত্মক পূর্ণসংখ্যা কয়টি আছে । সেগুলো হচ্ছে একটি 3 এর Multiple ও আরেকটি 4 এর Multiple এর সমান । 3 এর Multiple হলো = 3, 6, 9, 12, 15 4 এর Multiple হলো = 4, 5, 12, 16, 20 সংখ্যাগুলি 3 + 4 = 7 6 + 8 = 14 6 + 4 = 10 8 + 9 = 17 9 + 4 = 13 8 + 3 = 11 12 + 4 = 16 12 + 3 = 15 15 + 4 = 19 6 + 12 = 18 এই 10 টি সংখ্যা ।Related questions
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