1.

for any real number 't' [t] denotes the G.I.F. Let W be the set of all non- negative integers andf: W to Wis a gunctions defined byf (x)=(x- 10 [(x)/( 10 )] ) 10 ^([log _e x])+ f ([( x)/( 10)]), x gt 0if x= 0 , f( 7752)is a four digit number abcd then(c+d)- ( a+b)=

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5
7
3
2

Answer :B


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