Question

Evaluate

0.5×0.6×0.7=0.21

How does this answer come?

Answer 1

0.5×0.6×0.7

do it step by step
0.5*0.6
we have 5*6=30
here here are 2 decimal poins in 0.5 and one in 0.6;so their produc contain 2 decimal places
so give 2 decimal place to left side for 30
so it become 0.30 i.e 0.3

now substitute 0.3 instead of 0.5*0.6
so we have 0.3*0.7
follow same steps
3*7=21
2 decimals o left
so 0.21
so 0.5*0.6*0.7=0.21