The question is...
The number of integers between 1 & 1000(both inclusive) which are neither perfect squares nor perfect cubes is?
I sarted off like this-
(tried to count the number of digits which are perfect squares & cubes)
1-1-1
2-4-8
3-9-27
4-16-64
5-25-125
6-36-216
7-49-343
8-64-512
9-81-729
10-100-1000
11-121
12-144
.......
which goes upto 31 squared as 32 square > 1000
on counting all the red ones i get 40,
so the answer i got was 960 (which is two less than the given answer)
Originally Posted by adhyeta
The question is...
The number of integers between 1 & 1000(both inclusive) which are neither perfect squares nor perfect cubes is?
I sarted off like this-
(tried to count the number of digits which are perfect squares & cubes)
1-1-1
2-4-8
3-9-27
4-16-64
5-25-125
6-36-216
7-49-343
8-64-512
9-81-729
10-100-1000
11-121
12-144
.......
which goes upto 31 squared as 32 square > 1000
on counting all the red ones i get 40,
so the answer i got was 960 (which is two less than the given answer)
You have double counted two elements one of them is
I don't know the other of the top of my head
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