TCS Company Numerical Ability Co-ordinate geometry

In a sequence of integers , A(n)=A(n-1)-A(n-2), where A(n) is the n'th term in the sequence, n is an integer and n>=3,A(1)=1,A(2)=1
Calculate S(1000), where S(1000)is the sum of the first 1000 terms
a)2
b)3
c)4
d)0

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TCS Other Question

All faces of a cube with an eight-meter edge are painted red. If the cube is cur into smaller cubes with a two-meter edge, how many of the two-meter cubes have paint on exactly one face?
a)24
b)36
c)60
d)48
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