## EaSy PrOb

For students upto class 5 (age upto 12)
sakibtanvir
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### EaSy PrOb

Find all integers less than or equals to $100$ which is a multiple of either $3$ or $4$ and not a multiple of $5$ .
An amount of certain opposition is a great help to a man.Kites rise against,not with,the wind.

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### Re: EaSy PrOb

Hint :
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nafistiham
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### Re: EaSy PrOb

they are$3,4,6,8,12,16,18,21,24,27,28,32,33,36,39,42,44,48,51,52,54,$
$56,57,63,64,66,68,72,76,78,81,84,87,88,92,93,96,99$

i think it should be moved to primary
Last edited by nafistiham on Thu Feb 16, 2012 7:31 pm, edited 3 times in total.
$\sum_{k=0}^{n-1}e^{\frac{2 \pi i k}{n}}=0$
Using $L^AT_EX$ and following the rules of the forum are very easy but really important, too.Please co-operate.

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### Re: EaSy PrOb

ভাইয়া, দুই লাইনে লেখেন । কয়েকটা কাটা পড়েছে ।
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nafistiham
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### Re: EaSy PrOb

লিখলাম । কিন্তু, এমনিতেই দেখা যেত । যখন মনে হবে কিছু কাটা পরেছে Ctrl টিপে - টিপবা । অর্থাৎ ফন্ট ছোট করবা । তাহলেই দেখতে পারবা । চাইলে দেখে নিতে পার ।
nafistiham wrote:they are$3,4,6,8,12,16,18,21,24,27,28,32,33,36,39,42,44,48,51,52,54,56,57,63,64,66,68,72,76,78,81,84,87,88,92,93,96,99$

i think it should be moved to primary
Last edited by nafistiham on Thu Feb 16, 2012 7:32 pm, edited 1 time in total.
$\sum_{k=0}^{n-1}e^{\frac{2 \pi i k}{n}}=0$
Using $L^AT_EX$ and following the rules of the forum are very easy but really important, too.Please co-operate.

Eesha
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### Re: EaSy PrOb

nafistiham wrote:they are$3,4,6,8,12,16,18,21,24,27,28,32,33,36,39,42,44,48,51,52,54,$
56,57,63,64,66,68,72,76,78,80,81,84,87,88,92,93,96,99,100

i think it should be moved to primary
আচ্ছা আপনি $80$ আর $100$ লিখলেন কেন? এখানে তো বলা আছে যে $5$ দ্বারা বিভাজ্য সংখ্যাগুল বাদে...
গণিত অলেম্পিয়াডে প্রাইজ পাওয়াটাই আসল না। প্রাইজ সবসময় পায়না এমন অনেকেও অনেক ভাল।

পরিচিতি

nafistiham
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### Re: EaSy PrOb

Eesha wrote:
nafistiham wrote:they are$3,4,6,8,12,16,18,21,24,27,28,32,33,36,39,42,44,48,51,52,54,$
56,57,63,64,66,68,72,76,78,80,81,84,87,88,92,93,96,99,100

i think it should be moved to primary
আচ্ছা আপনি $80$ আর $100$ লিখলেন কেন? এখানে তো বলা আছে যে $5$ দ্বারা বিভাজ্য সংখ্যাগুল বাদে...
ধন্যবাদ । শুধরালাম ।
$\sum_{k=0}^{n-1}e^{\frac{2 \pi i k}{n}}=0$
Using $L^AT_EX$ and following the rules of the forum are very easy but really important, too.Please co-operate.

MD. Joynul Islam
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### Re: EaSy PrOb

Where is 9 and 69 ?

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### Re: EaSy PrOb

Yes, where is 9 and 69?
You cannot cross the sea merely by standing and staring at the water.

samiul_samin
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### Re: EaSy PrOb

Because there are total $40$ numbers using Principle pf inclusion-exclusion.But in the list there are 38 numbers.So,if we add $9$ and $69$ in the list,The list will be completed.