Question

how many significant figures in 1100 ?

Answer 1

4
4 digits with non-zero digit for the first one.

Answer 2

@ callisto m confused that if we take 1.1 * 10^3 then we have 2 significant digits

Answer 3

lol nope... you haven't counted 10^3 ...

Answer 4

1x10^3 -> 1000 -> 4 sig. digits
1.1 x 10^3 -> 1100 -> 4 sig. digits

Answer 5

@ Callisto 10^3 is not counted according to rule : a * 10^b , here b is an integer not considered as significant while a is considered as significant

Answer 6

http://www.youtube.com/watch?v=qXYoV0hFDS8&feature=relmfu

Answer 7

No... I mean...1 x 10^3 = 1000 <- 4 digits (I called it valid digit), so 4 significant digits

Answer 8

Poor me... My fault...

Answer 9

but in that video and other parts , in these type of questions significant digits are only calculated through scientific notations :

for example : 5.70 m = 570.0 cm = 5700 mm
but in 5.70 m there are three significant digits while in 570.0 cm there are 4 and in 5700 mm there are 4

Answer 10

Right, don't listen to me...
Forget what I've said (my biggest mistakes!!!)
It's 2

Answer 11

According to pruple math, only 1 and 1 are 'interesting', the 2 '0's behind are not. So, only 2 sig. digits

http://www.purplemath.com/modules/rounding2.htm

Answer 12

*purple math

Answer 13

I'm very sorry!!!!! Forgive me please :(

Answer 14

but m still sonfused , how can it be 2 , 1.1 * 10^3 have 2 sig. digits but 1.10 * 10^3 has 2 sig . digits

no sorry needed callisto , u gave me ur time for this questions thanks a lot , but what about the above doubt ?

Answer 15

hey thanks for that link , my doubt is clear now . Have a great day callisto .Thanks a lot again and again

Answer 16

You're welcome.... Extremely sorry for my silly mistakes!!

Answer 17

no problem