How many numbers are there from 2000 to 7000 which are both perfect squares and perfect cubes?
B. 1
C. 2
D. 3
Answer: Option B
Solution (By Examveda Team)
$$\eqalign{ & 2000{\text{ - - - - - - }}7000 \cr & {\text{Perfect square}} = \sqrt {4096} = 64 \cr & {\text{Perfect cube}} = \sqrt {4096} = 16 \cr} $$This Question Belongs to Arithmetic Ability >> Number System
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