Which
sentence shows the indicative mood ?

Question

Which
sentence shows the  indicative mood ?

Answer

If the first domino was
pushed over, then all remaining dominoes would also fall.

Answer

Is the game of dominoes
an analogy of the principle of mathematical induction?

Answer

If the  k th domino
falls over then it will cause the ( k +1)st domino to fall over as well.

Answer

Let S n  denote the sum of the terms
at the left

Answer

If the proposition is
true for  n  =  k , it is also true for  
 
 n  =  k  + 1

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