Question : Directions: Which number will replace the question mark (?) in the following series? 65, 62, 56, 47, 35,?
Option 1: 21
Option 2: 20
Option 3: 11
Option 4: 25
Correct Answer: 20
Solution : Given: 65, 62, 56, 47, 35,?
Subtract a continuous multiple of 3 in each number, to get the required missing number – 65 – 3 × 1 = 62; 62 – 3 × 2 = 56; 56 – 3 × 3 = 47; 47 – 3 × 4 = 35; 35 – 3 × 5 = 20
So, 20 is the required missing number in the series. Hence, the second option is correct.
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