Qualification > Math

statistics n09

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sweetie:
Thank You sooooooooo much
+rep

superduper2009:
in nov 09 paper 62.. how do u do q 4???
please explain with detail..
thanks in advance :D :D

Freaked12:

--- Quote from: superduper2009 on May 25, 2010, 10:03:51 pm ---in nov 09 paper 62.. how do u do q 4???
please explain with detail..
thanks in advance :D :D

--- End quote ---

Look greater then 500 means
it can only be >500
>600
>1000
>3000
>5000
>6000

because thats all numbers we got 1.3.5 and 6

There can four ways to make odd numbers greater then 500
513
531
561
563

similarly greater then 600
613
631
653
635
651
615
which means 6 ways

greater then 1000
1653
1365
1563
1635
= 4 ways
greater then 3000
3165
3561
3651
3615

=four ways
greater then 5000
5163
5361
5631
5613
four ways
greater then 6000
6135
6513
6531
6351
6153
6315
=six ways

4+6+4+4+4+6=28 ways

superduper2009:
Thanks+rep

Freaked12:
You welcome!
Any more questions (past years) i will be glad to help(i hope so)

Good luck!

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