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प्रश्न
Write the correct number in the given boxes from the following A. P.
70, 60, 50, 40,...
Here t1 = 
, t2 = , t3 = ,...
∴ a = , d =
उत्तर
70, 60, 50, 40,...
Here t1 = 
, t2 = 
, t3 = 
,...
∴ a = 
, d = 
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Activity :
