[40% of 40% of........... n times] of 40 < 1 minimum possible integral value of n will be

Anshul Garg   9 years AGO

According to the question
0.4^n * 40 < 1
0.4^n < 1/40
0.4^n < 0.025

it gives n equal to 5

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Jaspalsingh Parmar   9 years AGO

40*0.4=16
16*0.4=6.4
6.4*0.4=2.56
2.56*0.4=1.024
1.024*0.4=0.4096
so n= 5

Like? Yes (2) | No (1)  

apurva katyayni   9 years AGO

{(40/100)^n} * 40
now by putting the values of n=1,2,3........ we will find that for n=5 the value of {(40/100)^n}*40 is

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RAKESH   9 years AGO

(.4)^n < .025 => n min = 5

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karishma   9 years AGO

since(.4)^5*40

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PREETI   9 years AGO

by checking different optins. option 5 satisfied it.

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Pradyumna K S   9 years AGO

40%*40%....40%ⁿ times*40

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sompon temtheerakij   9 years AGO

40*0.4 = 16
16*0.4 = 6.4
6.4*0.4 = 2.56
2.56*0.4 = 1.024
1.024*0.4 = 0.4096

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Paras Jain   9 years AGO

(0.4)^n < 0.025 =====> least possible integer is n = 5 Ans.

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Sayan Dey   9 years AGO

(40/100)^n*40 < 1
(4^(n+1)/10^(n-1) )< 1
4^(n+1) < 10^(n-1)

solving for n,
least value which satisfies the above equation is n=5.

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souraj sadhukhan   9 years AGO

ansr is 5

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Ponni   9 years AGO

40% of 40 is 16
40% of 16 is 6.4
40% of 6.4 is 2.56
40% of 2.56 is 1.024
40% of 1.024 is 0.4096 < 1
so,the answer is option 5). 5

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CHANDAN KUMAR   9 years AGO

(40/100)^n*40

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guru   9 years AGO

0.4^n times 40

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Rakshit Shetty   9 years AGO

[40% of 40% of........... 5 times] of 40=0.4096
0.4096

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Vibha   9 years AGO

(40% of 40%of........n times) of 40 < 1
(40/100)^n *40< 1
[(4)^n/(10)^n] *40

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ABHINAV PUSHPAM   9 years AGO

R

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MRITUNJAY   9 years AGO

40*0.4*0.4*0.4*o.4*0.4

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Saurabh Kumar Gupta   9 years AGO

40*(40/100)=16
40*(40/100)*(40/100)=64/10
40*(40/100)*(40/100)*(40/100)=256/100
40*(40/100)*(40/100)*(40/100)*(40/100)=1024/1000
40*(40/100)*(40/100)*(40/100)*(40/100)*(40/100)=4096/10000

so min value of n = 5

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Sheetal Machale   9 years AGO

40%40=16
16×0.4×0.4×0.4×0.4=

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sayantani jana   9 years AGO

when n=4
then (0.4)^4*40=1.024
when n=5
then (0.4)^5*40=0.4096

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Rahul   9 years AGO

40% of 40 = 16
40% 0f 16=6.4
40% of 6.4=2.56
40% of 2.56=1.024
40% of 1.024=0.4096

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mohini gupta   9 years AGO

16,6.4,2.56,1.24,.4096...5th time

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Gitanjali K   9 years AGO

for n1
for n=5 it gives value

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pravin   9 years AGO

40/100*40/100*40/100*40/100*40/100*40=.4096

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Ankit Pandey   9 years AGO

n=1; 40% of 40=16
n=2; 40% of 16=6.4
n=3; 40% of 6.4=2.56
n=4; 40% of 2.56=1.024
n=5; 40% of 1.024=0.4096

So n=5 to get the value of expression less than 1.

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Devendra Marghade   9 years AGO

40*(0.4)^n < 1
(0.4)^n < 1/40
condition satisfies for n=5

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kumar shishir   9 years AGO

0.4*0.4*0.4*0.4*0.4*40=0.496

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Piyush Ratnam   9 years AGO

1) 40*40%=16
2) 16*40%=6.4
3) 6.4*40%=2.56
4) 2.56*40%=1.024
5) 1.024*40%=0.4096

So, n=5.

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TUSHAR    9 years AGO

.4096

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Ankit   9 years AGO

On taking one 40% at a time it can be checked.

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b.subbarao   9 years AGO

40/100*40/100*40/100*40/100*40/100*40=0.4096
so n=5 is minimum possible value

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Ashwani Kumar   9 years AGO

(40^n/100^n)*404.78 approx

min value of n should be 5 Ans.

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arush gupta   9 years AGO

(40% of 40%......5times ) of 40=0.4 i.e less than 1 therefore 5 is the answer

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Abhishek singh   9 years AGO

.40*40=16
.40*16=6.4
.40*6.4=2.56
.40*2.56=1.024
.40*1.024=0.4096

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rakhi kumari   9 years AGO

40*(40^5)/(100^5)

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Abhik Das   9 years AGO

simply try up to 5 times it will give you the answer=0.4096 which is less than 1

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Supriya Mondal   9 years AGO

As,
0.4*0.4*0.4*0.4*0.4=0.01024
and,0.01024*40=0.4096
So, option 5)5 is the right answer

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anu sharma   9 years AGO

.4*.4*.4*.4=.0256

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manohar kumar singh   9 years AGO

1: 16 2: 6.4 3: 2.56 4:1.024 5: 0.4096

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mayank agarwal   9 years AGO

(40/100)*(40/100)*(40/100)*(40/100)*(40/100)*40 = .4096

So, n=5.

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Sanu Panji   9 years AGO

40*.4*.4*.4*.4*.4= .4096

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