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Statements : 1. Most clocks are fans

2. Some fans are walls

Conclusions: 1. Some walls are fans

2. Some clocks are walls

Statements : 1. Most clocks are fans ( red portion in the diagram below)

2. Some fans are walls ( Black portion in the diagram below)

Conclusions: 1. Some walls are fans - true  ( black portion in the diagram above). Since some fans are walls so it would be always true.

2. Some clocks are walls - false ( You can see in the diagram, no clock is fan )

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By this we can't say some walls are fans

In this all walls are fans and some fans are walls

here 'some' - can be any( not all. or  all) numbe but at least one.

see this-

based on statements we draw venn diagrams na some fans are walls could be draw even as above na
And in this type of question, try to find contradiction point.
for that point i tried to draw it as all walls are fans we are not known whether all or some walls are fans so i think none are true

no , first one is true - because in your diagrma - "all walls are fan is equivalent to say some walls are fan"  because some means- at least one or not all or all.

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