### Look at this series: 2, 1, $$\frac{1}{2}$$, $$\frac{1}{4}$$, ... What number should come next?

Look at this series: 2, 1, $$\frac{1}{2}$$, $$\frac{1}{4}$$, ... What number should come next?
##### Explanation
This is a simple division series; each number is one-half of the previous number.

In other terms to say, the number is divided by 2 successively to get the next result.

$$\frac{4}{2} = 2$$
$$\frac{1}{2}= 1$$
$$\frac{1}{2}$$ = $$\frac{1}{2}$$

$$\frac{\frac{1}{2}}{2}$$= $$\frac{1}{4}$$

$$\frac{\frac{1}{4}}{2}$$= $$\frac{1}{8}$$ and so on.

#### Contributions (94)

an easier way to solve dis is by dividing d sound series wit d first series den multiply ur answer being 1/2 to 1/4 wich will give u 1/8.
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• Akintomiwa opemipo: Hmmm, nice one.
1 year ago
• Kent12: The answer is 1/8
1 year ago
•      9 months ago
since u ar dealing wit ratio we use geometric progression(G.P)

Tn=ar^(n-1)

parameters.

n=5 T1=2,T2=1,T3=1/2,T4=1/4,T5=?

a=2

r=T2/T1=1/2

so therefore:

T5=2 (1/2) ^ 5 - 1

T5=2 (1/2) ^ 4

T5=2 (1^4 / 2^4)

T5=2 (1/16)=2 x 1/16=2/16=1/8

so T5=1/8...

gotcha...Timileyin omo oba B@doo...
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• NASIR: good
1 year ago
• REBECCA: Waw Simple thanks
4 months ago
• Precious: Simpler method o
2 months ago
• Adebayo favour: A very good method
1 month ago
very easy..mere seeing itvu knw d answer nce site
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d question is obvious***as we can all see...... 1, 2 1/2, 1//4...d next ans is 1/8
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is correct
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the answer to ds question is ovious.
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• Kent12: How is it oviuos
1 year ago
Nice
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1/8 is correct
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• Kent12: Day's gud
1 year ago
The correct ans is B.using un=ar^n-1,we have the 5th term to be 2/2^4=1/8ans.
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• Enjay: Great
5 months ago
yes it is a gp question bt u can equally multiply by 1/2 to get 1/8
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d fact is any term times 1/2. I.e 1/2*1/4-(B)
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d numbers r multiplied by d fraction half(1/2)......therefore d ans is 1/8.
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•      11 months ago
Gp procedure is 4 theory while mere looking at it is 4 d objective question
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yap 2paq u are right
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normally it's a simple division method,u just divide it by 2 Nd then u know Wat comes next.
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• Kent12: It's dat so
1 year ago

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