Question

7) Find the least 4- digit number which is exactly
divisible by 10, 15,85​

Answer 1

Answer:

1020 is the least number divisible by all three.

Step-by-step explanation:

hope it helps

Answer 2

The smallest 4−digit number exactly divisible by 12,15,20 and 35 is .............

ANSWER

The smallest 4-digit =1000

Now L.C.M of 12,15,20and35

2∣12,15,20,35

2∣6,15,20,35

3∣15,5,35

5∣1,5,5,35

7∣1,1,1,1

1,1,1,1

L.C.M.=2×2×3×5×7=420

We divided 1000 by 420

420)1000(2

−840

160−Remainder

∴ The least 4−digit number that is exactly divisible by 12,15,20 and 35

=1000+(420−160)

=1000+260=1,260

I hope it helps you

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