if u cnsdr ny prfct sqr

1,4,9,16,25...........

the root digit i.e., the sum of the digits in that num ( e.g 49 = 4+9=13 1+3=4 therfr root digit fr 49 is 4 ) is alwys 1 4 7 or 9

in dis qstn its 100+200+300=600 => 6+0+0=6

thrfr nt a prfct sqr
:thumbsup: :thumbsup:

for any square the root digit is always 1,4,7,9

for this no. its 6

=> no number can be a perfect sqr

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Sum of digits = 100 + 200 + 300 = 600
=> Number is divisible by 3
=> Its has to be divisible by 9, as its a perfect sq
But its not divisible by 9, 600 = 6(mod 9)

So, none of the numbers can be a perfect sq.



but 600 is divisible by 2 n 4 then y not it can be>?

b. 11

sucks