a+b

If a is a natural number and b a digit such that (3a+2007)2=4b85924' then a+b=

a.31 b. 35 c.37 d. 41

5 Answers

1357
Manish Shankar ·

left side is multiple of '9'

so sum of the digits on RHS should be multiple of 9

b+32=9n
this might help

1
mkagenius ·

my answer is 41.

11
Subash ·

can some one explain this

62
Lokesh Verma ·

taking forward manish's arguement..

b+32=9n

b is less than 10

so 36 is the only possibleiyt ie b=4 and n=4

4485924=2118

hence 3a+2007=2118

3a=111

a=37

and thus, a+b=41

11
Subash ·

thanks bhaiyya

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