If on multiplying a decimal number by some power of 10, the place valu

1.	If on multiplying a decimal number by some power of 10, the place value of a digit changes from tenths to tens, then the power of 10 is:(a) 0(b) 1(c) 2(d) 3: Also explain because I have to solve this problem with the help of explanation that how the correct answer comes.
Answer» Answer: LET the decimal number be 0.5 Place value of a digit CHANGE from TENTHS to tens. 10² = 100 0.5* 100 = 50 Thus , the power of 10 will be 2

If on multiplying a decimal number by some power of 10, the place value of a digit changes from tenths to tens, then the power of 10 is:(a) 0(b) 1(c) 2(d) 3: Also explain because I have to solve this problem with the help of explanation that how the correct answer comes.

Answer»

Answer:

LET the decimal number be 0.5

Place value of a digit CHANGE from TENTHS to tens.

10² = 100

0.5* 100 = 50

Thus , the power of 10 will be 2