00:01
Hello everyone, in the first part of given question we have to round off a number and number is given as 6743 .6743 .865.
00:10
This is the given number.
00:12
Now as you can see that this number is having all non -zero digits.
00:16
So basically it is having seven significant digits.
00:20
This number is having seven significant figures.
00:24
Now for the first time we have to round it off so the number have only six significant figures.
00:30
So as you can see that the last digit is five.
00:32
Now whenever the last digit is fire the preceding digit must be even number.
00:36
If it is not even then we should have to make it an even number.
00:39
But now here the preceding digit is even so it will face no change.
00:44
So the rounded of number is 6743 .86.
00:48
Now this number is having six significant figures.
00:52
Now in the second part of this we have to round it off for one more time to make it five significant.
00:57
Figure digit number.
00:59
Okay, so again if you see the last digit, last digit is six which is greater than five.
01:04
Here the last digit is greater than five.
01:06
So the preceding digit will be increased by one.
01:09
So rounded of value is 6 -743 .0.
01:12
0 .9 and this number is having five significant figures this time.
01:17
Now we have to round it off for one more time to reduce its significant figures by 1...