keep index of omited array

A={[1,2,3,4,5],[1,3],[1],[1,3,4,5,6,7,89,0],[1,3],[1,3,4,5],[4,6]};
N = cellfun(@length,A) ; 
A(N==2) = [];

I want to have index of length 2

result=[2,5,7]

I use this code but have error

index = cellfun(@(m) find(m(N==2)),A,'uni',0);

Answer 1

[madhan ravi]

find(N==2)