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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Question : Directions: Select the number that can replace the question mark (?) in the following series. 15, 18, 13, 20, 11, ?
Option 1: 22
Option 3: 25
Option 4: 23
Question : Directions: Which number will replace the question mark (?) in the following number series? 34, 42, 50, 56, 62, 66,?
Option 1: 66
Option 2: 68
Option 3: 72
Option 4: 70
Question : Directions: Which number will replace the question mark (?) to complete the given series? 10, 21, 35, 56, 90, 145, 231, 360, ?
Option 1: 436
Option 2: 546
Option 3: 463
Option 4: 564
Question : Directions: Select the number that can replace the question mark (?) in the following series. 1, 11, 35, 79, ?, 251
Option 1: 152
Option 2: 149
Option 3: 105
Option 4: 150
Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 69, 65, 67, 63, ?, 61
Option 1: 65
Option 2: 60
Option 3: 62
Option 4: 64
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