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Find out the smallest four digit number which is divisible
from 1 to 10?
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Answer / saket agrawal
Yes 2520 is right answer let me elaborate bit more on how to
get to this answer.
required number = 9 * 8 * 5* 7
5 and 7 are in list since they are prime number and they
have no other multiple in 1 to 10. 3 is also a prime number
but is not used in this multiplication since we already have
used 3 (9 is divisible by 3).
Since its an even number and divisible by 5 we can neglect 10.
Since its even and divisible by 3 we can neglect 6 too.
Similarly divisible by 8 means divisible by 4 and 2.
Let me ask another question. What is the smallest number
which is divisible by all number from 1 to 9 (note I left
out 10)
| Is This Answer Correct ? | 61 Yes | 5 No |
Answer / ramji
sorry It's 2520 only... I multiplied wrongly...
10*9*7*4
prime number multiplicastion is not useful...
1050 is not divisible by 8,9
| Is This Answer Correct ? | 51 Yes | 9 No |
Answer / amit
Let me ask another question. What is the smallest number
which is divisible by all number from 1 to 9 (note I left
out 10)
Answer would be the same!!
2520
| Is This Answer Correct ? | 43 Yes | 5 No |
Answer / aditi
2520 is the correct answer, simplest way to do is finding the LCM from 1-10.
| Is This Answer Correct ? | 33 Yes | 7 No |
Answer / pranita
1260 is not divisible by 8
1000 is not divisible by 7
yhe right answer is 2520
| Is This Answer Correct ? | 24 Yes | 8 No |
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