Latest Elitmus Aptitude Question SOLUTION: If [x] is the greatest integer, less than or equal to x, then in [n^1/3]=5, n can take how many values option a. 91 b. 90 c. 3 d. 1 Ans. 91

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(#M40030457) ELITMUS question Keep an EYE

If [x] is the greatest integer, less than or equal to x, then in [n^1/3]=5, n can take how many values
option
a. 91
b. 90
c. 3
d. 1

Ans. 91

Asked In Elitmus srujana ponna (10 years ago)

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RAKESH  (10 years ago)

[n^1/3]=5
as 125^1/3=5,216^3=6
so value of n will be from 125 to 215(only these values satisfies the eqn)
no. of values=215-125+1=91

Is this solution Helpfull? Yes (29) | No (7)  

RAKESH  (10 years ago)

given,[n^1/3]=5
if
n=125 then n^1/3=5 so [n^1/3]=5
n=126 then n^1/3=5.something so [n^1/3]=5
n=127 then n^1/3=5.something so [n^1/3]=5
...........
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similarly
n=215 then n^1/3=5.9 so [n^1/3]=5
n=216 then n^1/3=6 so [n^1/3]=6
so value of n will be from 125 to 215 becoz only these values satisfies the eqn
no. of values of n =215-125+1=91

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srujana ponna  (10 years ago)

can u please explain it in detail. here y r u taking 216 only?

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rahul singh  (10 years ago)

according to the condition [x]

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rahul singh  (10 years ago)

according to the condition [x]

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SAURAV BANERJEE  (10 years ago)

rakesh you r wrng!!!! no other 1/3 != 5 , if you think you r correct than prove it

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puneet khandelwal  (10 years ago)

5

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