Author Topic: IGCSE MATHS  (Read 5644 times)

Offline Ghost Of Highbury

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Re: IGCSE MATHS
« Reply #15 on: October 26, 2009, 10:49:06 am »
120.00..u sur it haz 5 sig figurez?

i dont think it is..but its from wikipedia.
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zara

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Re: IGCSE MATHS
« Reply #16 on: October 26, 2009, 10:56:51 am »
i dont think it is..but its from wikipedia.

i chked it with two more sites n it says the same..


Offline @d!_†oX!©

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Re: IGCSE MATHS
« Reply #17 on: October 26, 2009, 10:59:36 am »
guys it is 0.0159
as in the preceeding zero is not counted as per our own mark schemes...
i think dts enough for the confirmation
AAL IZZ WELL!!! ;)

zara

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Re: IGCSE MATHS
« Reply #18 on: October 26, 2009, 11:03:39 am »
Zeroes placed after other digits but behind a decimal point are significant; 7.90 has three significant digits.


Offline Ghost Of Highbury

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Re: IGCSE MATHS
« Reply #19 on: October 26, 2009, 11:08:24 am »
Zeroes placed after other digits but behind a decimal point are significant; 7.90 has three significant digits.



this cant be true

7.90 can be written as 7.900000000 or 7.9

its all the same...this changes the no. of significant digits..u sure abt this?
divine intervention!

Offline adorabledaughter_07

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Re: IGCSE MATHS
« Reply #20 on: October 26, 2009, 11:12:16 am »
yehz sme q...soh u mean 120.000 has 6 sig figurz...nd 120.0000 haz 7???
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Offline Ghost Of Highbury

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Re: IGCSE MATHS
« Reply #21 on: October 26, 2009, 11:13:31 am »
yehz sme q...soh u mean 120.000 has 6 sig figurz...nd 120.0000 haz 7???

how many wil 120.0000000000000000000000000000000000000000000000000000000000000 have?

lol ... :P :P
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zara

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Re: IGCSE MATHS
« Reply #22 on: October 26, 2009, 11:16:48 am »
this cant be true

7.90 can be written as 7.900000000 or 7.9

its all the same...this changes the no. of significant digits..u sure abt this?
okay...im realli confused now.. ???
i think we must wait for astar?
need explanation because i chked this thing with few sites n they say this only :-\

Offline @d!_†oX!©

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Re: IGCSE MATHS
« Reply #23 on: October 26, 2009, 11:19:06 am »
guys its very simple..
v count zero as a significant figure only if it comes between to no. dt are nt 0
dt means:
0.012 has 2 sig figs
0.120 has 2 sig figs
0.102 has 3 sig figs
AAL IZZ WELL!!! ;)

Offline Ghost Of Highbury

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Re: IGCSE MATHS
« Reply #24 on: October 26, 2009, 11:22:06 am »
guys its very simple..
v count zero as a significant figure only if it comes between to no. dt are nt 0
dt means:
0.012 has 2 sig figs
0.120 has 2 sig figs
0.102 has 3 sig figs

we all know that adi..check wat Z.J type ...that was from wikipedia...read the whole thing..
divine intervention!

Offline @d!_†oX!©

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Re: IGCSE MATHS
« Reply #25 on: October 26, 2009, 11:29:23 am »
but i dont agree with it!!!!!!
u
AAL IZZ WELL!!! ;)

zara

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Re: IGCSE MATHS
« Reply #26 on: October 26, 2009, 11:36:27 am »
wait for astar!

Offline @d!_†oX!©

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Re: IGCSE MATHS
« Reply #27 on: October 26, 2009, 11:37:02 am »
ya ok...bt wen will he be back???
AAL IZZ WELL!!! ;)

Offline sameer210394

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Re: IGCSE MATHS
« Reply #28 on: October 26, 2009, 11:54:24 am »
yes adi_t


here...
The rules for identifying significant digits when writing or interpreting numbers are as follows:
>All non-zero digits are considered significant. Example: the number 1 has one significant figure. In 20 and 300, the first figure is significant while the others may or may not be (see below). 123.45 has five significant figures: 1, 2, 3, 4 and 5.
 
>Zeros appearing anywhere between two non-zero digits are significant. Example: 101.12 has five significant figures: 1, 0, 1, 1 and 2.
 
>Leading zeros are not significant. For example, 0.00052 has two significant figures: 5 and 2.

>Trailing zeros in a number containing a decimal point are significant. For example, 12.2300 has six significant figures: 1, 2, 2, 3, 0 and 0. The number 0.000122300 still has only six significant figures (the zeros before the 1 are not significant). In addition, 120.00 has five significant figures. This convention clarifies the precision of such numbers; for example, if a result accurate to four decimal places is given as 12.23 then it might be understood that only two decimal places of accuracy are available. Stating the result as 12.2300 makes clear that it is accurate to four decimal places.

this is absolutely right...

this para explains it all.. wat all explanation du u guys need ???
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Offline Ghost Of Highbury

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Re: IGCSE MATHS
« Reply #29 on: October 26, 2009, 11:56:29 am »
does 120.00 have 5 significant digits?

its written in the para..
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