The number between 2500-3000 completely divisible by 21,24,and 28 is
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2856 is the number which can be divided by 21,24,28
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Answer:
LCM of 21,24 and 28 :
21=3*7
24=2*2*2*3
28=2*2*7
LCM= 2*2*2*3*7=168
Smallest digit between 2500 and 3000 divisible by 21,24 and 28 =
168)2500(14
2352
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148
So, Smallest digit between 2500 and 3000 divisible by 21,24 and 28 =2500+(168-148)=2520
Next digit = 2520+168=2688
3rd digit= 2688+168=2856
4th digit=2856+168=3024 >3000
So total numbers between 2500 and 3000 which are divisible by 21,24 and 28=3
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