Question

he sum of the first 3 common multiples of 5, 7 and 10 is _______________. *
1 point
140
70
350
420

Answer 1

Step-by-step explanation:

First 3 common multiples of 5,7 and 10:

First three multiples of 5= 5,10,15, 20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,105,110,115,120,125,130,135,140

First three multiples of 7= 7,14,21,28,35,42,49,56,63,70,77,84,91,98,105,112,119,126,133,140

First three multiples of 10=10,20,30,40,50,60,70,80,90,100,110,120,120,140

First three common multiples of 5,7and 10:

70,140,210 = 7×10,7×20,7×30