" 5.Is "0" a term of the "AP:31,28,25,...?" Justify your answer."

Is 144 a term of the A.P. 3,7,11,…………? Justify your answer.

Is 'zero' a term of the Arithmetic Progression 31, 28, 25, ….? Justify your answer.

Is it true to say that a_n= 3n^(2) + 5 is the n^(th) term of an A.P. sequence? Justify your answer.

For an arithmetic sequence 22,26,30,..... Can the difference between any two terms of this sequence be 50. Justify your answer ?

Define the term 'resolving power of a telescope'. How will the resolving power be affected with the increase in Diameter of the objective lens? Justify your answer.

Is a square similar to a rectangle? Justify your answer.

Is silver is mineral or Ore? Justify your answer.