Question :
Directions: Which number will replace the question mark (?) in the following series? 729, 243, ?, 27, 9, 3
Option 1: 54
Option 2: 78
Option 3: 81
Option 4: 36
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Correct Answer: 81
Solution : Given: 729, 243, ?, 27, 9, 3
The power of 3 is decreased by 1 in each number, to get the required missing number – 729 = 36; 243 = 35; 81 = 34; 27 = 33; 9 = 32; 3 = 31
So, 81 is the missing number in the series. Hence, the third option is correct.
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Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 57, 69, 88, 112, 150, 186, 243, ?
Option 1: 286
Option 2: 289
Option 3:
291
Option 4: 300
Question : Directions: Which number should replace the question mark (?) in the following number series? 49, 54, 44, 59, ?, 64, 34
Option 1: 51
Option 2: 36
Option 3: 39
Option 4: 44
Question : Directions: In the following question, select the related number from the given alternatives. 9 : 25 :: 49 : ?
Option 1: 36
Option 2: 54
Option 3: 64
Option 4: 81
Question : Directions: Which number should replace the question mark (?) in the following number series? 32, 54, 98, 186, ?, 714
Option 1: 452
Option 2: 450
Option 3: 362
Option 4: 354
Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 1, 4, 27, 16, 125, ?
Option 1: 216
Option 3: 343
Option 4: 49
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