Elitmus Exam Numerical Ability Number System

If for any series b(n)=2b(n-1) when b(n) is odd number and b(n)=b(n-1) if b(n) is even number. then find value of b(100)-b(97)-b(96) if b(0)=1

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Elitmus Other Question

if any set of numbers starting with {2,3,4,.....876,877} . how many A.P. can be formed if every A.p. contains at least 3 terms and starting with 2 and ending with 877.
a)-6 b)-7 c)-9 d)-12
what should be the minimum no of student in a class room in which 25% student score 75 marks,10% student score 85 marks,15 % student score less than 50 marks, 25% score 60 marks and remaining student score more than 90 marks..
option:
A-100
B-80
C-70
D-None of these