Question

solve this problem please ​

Answer 1

see here the first one is multiple of 3 and that's why the lower circle is 21 that is 3×7=21

again the second one is the multiple of 5 and that's why the lowercircle is 45 that is 5×9=45

and the last one is multiple of 7 7×5 = 35

please mark it as brainliest