1. Weight of 200 coins
   

   Ans : A

2. Positive integers less than 40 but more than 20 equal to six times an even integer are

   24 = 6 ´
   

   36 = 6 ´

   Ans : B

3. If k = 50⁰, s = 65⁰
   

   If 0 < k < 50⁰, then the possible values of 's' range from greater than 65⁰ to less than 90⁰

   i.e. 65⁰ < s < 90⁰
   

   Ans : C

4. 

   Ans : D

5. 
6. (100 - 4)² = 96²

                   = 9216

          9216 = 10⁴ - n
   

                n = 10000 - 9216
   

                   = 784

   Ans : C

7. 

   

   Ans : A

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