Question

plzz ans them it's urgent

Answer 1

for class 1=3×1=3

for class 2=3×2=6


for class3= 3×3=9

for class 4=3×4=12


for class 5 = 3×5=15


for class6=3×6=18

for class 7 =3×7=21

for class 8 =3×8=24

for class 9 =3×9=27


for class 10 =3×10=30

for class 11 = 3×11=33


for class 12=3×12=36



add them all