Electrical Engineering - Quantities and Units - Discussion

Discussion Forum : Quantities and Units - General Questions (Q.No. 3)
3.
The number 65,000 expressed in scientific notation as a number between 1 and 10 times a power of ten is
0.65 × 104
6.5 × 104
65 × 104
650 × 103
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
31 comments Page 1 of 4.

Agat said:   11 months ago
The number 65,000 can be expressed in different scientific notations.

6.5 x 10^4
65 x 10^3
650 x 10^2
6500 x 10^1 .

These are all right, but based on the question "expressed in scientific notation as a number between 1 and 10 times a power of ten "
Option B is the correct answer, the number "6.5" is between 1 and 10.
(4)

Sai said:   4 years ago
@Jannat.

The +1is added because of 65000 = 65 * (10^3) = 6.5 * 10^4.
6.5 = (65/10).
(5)

Er.rajwinder singh said:   5 years ago
Its simple look all given options and proper read question we already found the number between 1 to 10. look A option 0.65, c option 65 and last D 650 each are lie between 1 to 10 so answer is clear 6.6 x 10>4
(3)

P.JAGATHEESWARAN said:   5 years ago
I need perfect explanation for this question if you know please explain to me.
(2)

Avijit Hazra said:   6 years ago
I can't understand. Please explain the solutions.
(3)

Vishnu priya said:   6 years ago
I can't understand clearly. Please explain to me.
(1)

IFEANYI SOLOMON said:   6 years ago
According to me, it should be 65*10^3.

Muzaffar Baba said:   6 years ago
Sol:

65000= 65*1000
= [65*10^3]
= [65/10 * 10 * 10^3] {Multiple & divide 65 by 10}.
= [65/10 * 10 * 10^3 {10^3 3 is raised power 10},
= [65/10 * 10^4] {bases are same powers are added i.e 10^1 * 10^3=10^4},
= [6.5*10^4] {65/10=6.5}.

So, the Answer is (B).
(7)

Chandru said:   7 years ago
Thank you all for the given explanation.
(1)

Saritha said:   7 years ago
65,000.
65 * 1000 = 65*10^3.
65 * (10/10) * 10^3.
(65/10) * (10^1*10^3).
6.5 * 10^4.
{a^m*a^n=a^(m+n)}.
(3)


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