10 x 10 = 100
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10^4=10000 10000*5.2= 52,000
0.000391 is the decimal equivalent.
which expression is equivalent to (3 x 10^3) (5 x 10 ^5) sorry that is what i ment
The number 15,000,000,000,000,000,000,000,000, written in scientific notation, is equivalent to 1.5 x 10^25. This means that you move the decimal point 25 places to the right to get the original number. In terms of powers of ten, this number can also be expressed as 15 x 10^24.
If zero is permitted as the first digit then the number of combinations is 10 x 10 x 10 x 10 x 10 = 100000 If zero is not permitted then the number of combination is :- 9 x 10 x 10 x 10 x 10 = 90000