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Consider all function f: {1,2,3,4} to {1...

Consider all function `f: {1,2,3,4} to {1,2,3,4}` which are one-one, onto and satisfy the following property :
If `f (k)` is odd then `f (k+1)` is even,` K=1,2,3.` The number of such function is :

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RESONANCE DPP ENGLISH-JEE MAINS-All Questions
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