Find the least number of 5 digit exactly divisible by 9,12,15&21
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Answer:
The number is 10080
Step-by-step explanation:
Take l.c.m(9,12,15, 21)=1260
The least 5digit number is 10000
Divide 10000/1260=7.9365079365079
0.9365079365079 is unwanted
To find the perfect whole number
1260x7=8820(4 digit)==>not the answer
Round off 7.9365079365079=8
1260x8=10080(5digit)
10080/9=1120
10080/12=840
10080/15=672
10080/21=480
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