Latest Elitmus Aptitude Question SOLUTION: two sides of triangle are 50m and 8m, third side is n, find out the n?? a)392 b)390 c) 398 d) 395

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(#M40151581) ELITMUS Numerical Ability question Keep an EYE

two sides of triangle are 50m and 8m, third side is n, find out the n??
a)392 b)390 c) 398 d) 395

Asked In Elitmus bhagya shri (9 years ago)

Unsolved Read Solution (9)

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Read Solution (9) :

Ashok Kumar Thakur  (8 years ago)

Two sides of triangle are ln(50) and ln(8), third side is ln(n). Find out the number of possible values of n?

Ans:-

Sum of two sides of a triange is always greater than the third side

case 1:

So, ln(50) + ln(8) > ln(n)

=> ln(50x8) > ln(n) ( ∵ log (a) + log(b) = log(ab) )

=> 400 > n

i.e. n < 400

logax is defined for x > 0. So, n will be greater than 0

So, 0 < n < 400

case 2:

So, ln(50) + ln(n) > ln(8)

=> ln(50n) > ln(8) ( ∵ log (a) + log(b) = log(ab) )

=> 50n > 8

i.e. n > 4/25

case 3:

So, ln(8) + ln(n) > ln(50)

=> ln(8n) > ln(50) ( ∵ log (a) + log(b) = log(ab) )

=> 8n > 50

i.e. n > 25/4



Combining results from case 1, case 2 and case 3 we get:

25/4 < n < 400

So, range of integral values of n satisfying the above condition is: 7 ≦ n ≦ 400

Hence no of integral values of n are: 393

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Pushpak  (9 years ago)

wrong question

Is this solution Helpfull? Yes (7) | No (2)  

Pushpak  (9 years ago)

question is
two sides of triangle are ln(50) and ln(8), third side is ln(n), find out the n??
a)392 b)390 c) 398 d) 395

Is this solution Helpfull? Yes (2) | No (1)  

ananga  (8 years ago)

@ashok how can u write 393 as ans.??

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Ehtesham  (9 years ago)

Incomplete Question.Please upload again

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insha singh  (8 years ago)

difference of two sides< 3rd side< sum of two sides
sum=ln(50)+ln(8)=ln(400)
difference=ln(50)-ln(8)=ln(25/4)=ln(6.2)
so, ln(6.2)

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Amit Kumar Singh  (7 years ago)

the answer would be 392

the range would be from 25/4 to 400 25/4

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Abhishek sharma  (6 years ago)

please submit appropriate answer

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vikash rawat  (8 years ago)

Plz give the solution..

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