Question

how do we doo this??????answer fast pls........!!!!!!!

Answer 1

1260÷12= 105
1260÷15= 84
1260÷20= 63
1160÷35 = 36

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..hope you understood.

Answer 2

Answer:

1260

Step-by-step explanation:

Prime factorization of 12 = 2² * 3

Prime factorization of 15 = 3 * 5

Prime factorization of 20 = 2² * 5

Prime factorization of 35 = 5 * 7

LCM(12,15,20,35) = 2 * 2 * 3 * 5 * 7

                             = 420.

Now,

Divide the smallest number with the LCM

⇒ 1000 ÷ 420

420) 1000 (2

       840

       ------

        160

       

Here,Remainder = 160.

Hence,required number = 1000 + (420 - 160)

                                        = 1000 + 260

                                        = 1260.

Therefore,the smallest 4-digit number is 1260.

Hope it helps!