Same rule for the 2nd set of numbers?

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Mr Zee
Posts: 11
Joined: Thu Jan 10, 2008 3:59 pm

Same rule for the 2nd set of numbers?

Post by Mr Zee »

Using the same rules for the 1st set of numbers, find the missing number in the 2nd set of numbers.

(a) 3 [12] 48 5 [ ] 80 the answer is [color=red]20[/color]

(b) 100 [20] 4 150 [ ] 6 the answer is [color=red]30[/color]

(c) 3 [15] 75 4 [ ] 100 the answer is [color=red]20[/color]

I can not work out the rules or the patten can any one help please?

Mr Zee
Mike
Posts: 625
Joined: Thu Jan 12, 2006 4:29 pm

Post by Mike »

Hi

(a) multiply then square root

48 x 3 = 144
square root = 12

80 x 5 = 400
square root = 20

Same rule for (b) and (c)

Regards

Mike
Mike Edwards is a co-author of The Tutors product range.
Mr Zee
Posts: 11
Joined: Thu Jan 10, 2008 3:59 pm

Post by Mr Zee »

Thanks Mike
Mr Zee
dadofkent
Posts: 515
Joined: Tue Jan 01, 2008 2:05 pm

Re: Same rule for the 2nd set of numbers?

Post by dadofkent »

Mr Zee wrote:Using the same rules for the 1st set of numbers, find the missing number in the 2nd set of numbers.

(a) 3 [12] 48 5 [ ] 80 the answer is 20

(b) 100 [20] 4 150 [ ] 6 the answer is 30

(c) 3 [15] 75 4 [ ] 100 the answer is 20

I can not work out the rules or the patten can any one help please?

Mr Zee
?
a) 3x4=12
12x4 =48

5x4=[20]
20x4=80

b) divide by 5

c) multiply by 5
JaysDarlin
Posts: 548
Joined: Mon Jun 16, 2008 6:34 pm

Post by JaysDarlin »

Square Root? :shock:
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