Latest Elitmus Aptitude Question SOLUTION: A sequence of natural number 2,3,5,6,10............. such that no square and no cube occurs in the term.find the 300th term of sequence. option dont remenber.

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(#M40160088) ELITMUS Numerical Ability question progression Keep an EYE

A sequence of natural number 2,3,5,6,10............. such that no square and no cube occurs in the term.find the 300th term of sequence.

option dont remenber.

Asked In Elitmus Sahil Tanwar (7 years ago)

Unsolved Read Solution (7)

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Read Solution (7) :

abhi  (7 years ago)

From 1 to 300 natural numbers 300 would have been the 300th natural number.
Now we removed squares between 1 to 300 which will be 1, 4, 9, 16 till 289 so total 17 numbers.
We then removed cubes from 1 to 300 1, 8, 27, 125, 216 5 cubes of which 1 and 64 are common. So in total, there are 21 numbers removed. So the 300th term would become 321 as there are no cubes or squares between 300 and 321.

Is this solution Helpfull? Yes (29) | No (5)  

rajesh dharamdasani  (7 years ago)

ans is 321

Is this solution Helpfull? Yes (4) | No (1)  

sooraj singh  (7 years ago)

1 to 300 = 300 numbers
squares btwn 1 to 300 = 1,4,9,16,25,36,49.....289 i.e, total 17
cubes = 1,8,27,64,125,216 i.e, 5
now 1 and 64 are common so total numbers that should be removed ( 17+5-2= 20 )
total 20 term removed so 300th term would be 320

Is this solution Helpfull? Yes (3) | No (9)  

Shallu  (7 years ago)

Squares 1 4 9 25 36 49 64 81 100 121 144 169 196 225 256 289 total 16 cubes 1 8. 27 64 125 216 total 6 overall 16+6 but 1 and 64 common counted 2 times each so 16+6-2 =20 so 300+ 20 = 320

Is this solution Helpfull? Yes (3) | No (3)  

Ganesh  (7 years ago)

1 to 300 = 300 numbers
squares btwn 1 to 300 = 1,4,9,16,25,36,49.....289 i.e, total 17
cubes = 1,8,27,64,125,216 i.e, 5
now 1 and 64 are common so total numbers that should be removed ( 17+5-2= 20 )
total 20 term removed so 300th term would be 320

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

Divya Kumari  (7 years ago)

320 correct

Is this solution Helpfull? Yes | No (6)  

Ajay Bhat  (7 years ago)

1 to 300 = 300 numbers
squares btwn 1 to 300 = 1,4,9,16,25,36,49.....289 i.e, total 17
cubes = 1,8,27,64,125,216 i.e, 5
now 1 and 64 are common so total numbers that should be removed ( 17+5-2= 20 )
total 20 term removed so 300th term would be 320

Is this solution Helpfull? Yes | No (5)  

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