Question

115. The least positive whole number that should
be added to 1515 to make it a perfect square
number is
A 3
B. 4
C. 5
D. 6

gull expalin answer ​

Answer 1

Answer:

the least positive number is 6

Step-by-step explanation:

1515+6=1521

1521 is the perfect square

39 square is 1521

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Answer 2

Answer:

when we add all the given options to value(1515)..

we get.....A)1518

B).1519

C).1520

D).1521.

Step-by-step explanation:

now for prefect square number....

we take square root(√).........

A).√1518=38.96

B).√1519=38.97

C).√1520=38.98

D).√1521=39

by finding the square root of all options,we came to know that

Option (D)

is correct answer because all other are not have proper square root number.........

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