Hello,
500=10^x
==> Log 500=xLog10
==>x=log 500
==>x=2,6989700043360188047862611052755...
Answer:
27
Step-by-step explanation:
total=average ×no.
18×40=720 the no. of coins for all children
12×24=288 no. of coins for boys
720-288=432 for all girls
one girl, mean,divide 432 by 16= 27
Answer:
6
Step-by-step explanation:
7n=42
n=42/7
n=6