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#1 2009-02-07 03:26:19
- Debanjan4you
- Member
- Registered: 2009-02-07
- Posts: 2
Missing Term
Hello guys I am new to this forum, will you help me in this problems:
Find the missing term:
1.
190 67 200
40 190 98
5 1 ?
2.
22 18 16 20
220 144 112 ?
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#2 2009-02-07 08:31:03
- careless25
- Real Member
- Registered: 2008-07-24
- Posts: 560
Re: Missing Term
tell me if you dont understand, i kno i m not clear. I cant see a pattern in 1 yet.
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#3 2009-02-07 08:53:42
- Debanjan4you
- Member
- Registered: 2009-02-07
- Posts: 2
Re: Missing Term
@ careless25
Thanks for the reply !
Sorry I didn't get your point ! 
Please explain it a little bit clearly.
_______
.
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#4 2009-02-08 12:04:12
- mathsmypassion
- Member
- Registered: 2008-12-01
- Posts: 33
Re: Missing Term
Answer for the second one:
220 = 22 × 10
144 = 18 × 8
112 = 16 × 7
What is missing?
= 20 × 9 = 180
My answer is 180.
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#5 2009-02-09 15:19:04
- careless25
- Real Member
- Registered: 2008-07-24
- Posts: 560
Re: Missing Term
mathsmypassion explained it more clearly, do u understand it?
for my second answer this is what i did
220 = 22 * 10
144 = 18 * 8
112 = 16 * 7
the pattern i see is:
the difference of the multipliers decrease by half every term.
10 - 8 = 2
8 - 7 = 1
therefore 7 - x = 0.5 so x = 6.5
and you get
130 = 20 * 6.5
better?
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