1)which is not a perfect square a)4900. b)16×10²⁶. c)16000. d)4×10⁸
Answers
SOLUTION
TO CHOOSE THE CORRECT OPTION
which is not a perfect square
a) 4900
b) 16 × 10²⁶
c) 16000
d) 4 × 10⁸
CONCEPT TO BE IMPLEMENTED
A number that ends with odd number of zeros can not be a perfect square
EVALUATION
CHECKING FOR OPTION (a)
Here the given number is 4900
Since the number of zeros is 2 which is even
So 4900 can be a perfect square
More precisely square root of 4900 = 70
CHECKING FOR OPTION (b)
Here the given number is 16 × 10²⁶
Since the number of zeros is 26 which is even
So 16 × 10²⁶ can be a perfect square
More precisely square root of 16 × 10²⁶
CHECKING FOR OPTION (c)
Here the given number is 16000
Since the number of zeros is 3 which is odd
So 16000 can not be a perfect square
CHECKING FOR OPTION (d)
Here the given number is 4 × 10⁸
Since the number of zeros is 8 which is even
So 4 × 10⁸ can be a perfect square
More precisely square root of 4 × 10⁸
FINAL ANSWER
Hence the correct option is c) 16000
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