Question : Directions: In the following question, select the missing number of the given series. 25, 23, 19, 11, –5, ?
Option 1: –40
Option 2: –30
Option 3: –50
Option 4: –37
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Correct Answer: –37
Solution : Given: 25, 23, 19, 11, –5, ?
In the above-given series, subtract twice the difference of the previous two numbers from the next number. 25 – 2 = 23; 23 – (2 × 2) = 23 – 4 = 19; 19 – (4 × 2) = 19 – 8 = 11; 11 – (8 × 2) = 11 – 16 = –5; –5 – (16 × 2) = –5 – 32 = –37
So, the missing number of the series is –37. Hence, the fourth option is correct.
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Question : Directions: In the following question, select the missing number of the given series. 17, 19, 23, 29, 31, ?
Option 1: 30
Option 2: 47
Option 3: 40
Option 4: 37
Question : Directions: In the following question, select the missing number of the given series. 10, –18, –46, –74, –102, ?
Option 2: –133
Option 3: –130
Option 4: –150
Question : Directions: In the following question, select the missing number of the given series. 55, 38, 21, 4, –13, ?
Option 1: –30
Option 2: –20
Option 3: –28
Option 4: –18
Question : Directions: Study the given pattern carefully and select the number that can replace the question mark (?) in it. First row – 11, 19, 27 Second row – 17, 25, 33 Third row – 23, 31, ?
Option 1: 39
Option 2: 14
Option 3: 33
Option 4: 40
Question : Directions: In the following question, find the odd number pair from the given alternatives.
Option 1: 10 – 30
Option 2: 11 – 33
Option 3: 50 – 150
Option 4: 13 – 37
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