Question : Directions: Which number can replace the question mark (?) in the following series?
999, 995, 986, 970, 945, ?
Option 1: 909
Option 2: 905
Option 3: 901
Option 4: 906

Question

Question : Directions: Which number can replace the question mark (?) in the following series?
999, 995, 986, 970, 945, ?

Option 1: 909

Option 2: 905

Option 3: 901

Option 4: 906

Team Careers360 · Accepted Answer

Correct Answer: 909

Solution : Given:
999, 995, 986, 970, 945, ?

Subtract the squares of the consecutive natural numbers (starting from 2) from each term to get the next term of the series –
999 – (2)² = 999 – 4 = 995
995 – (3)² = 995 – 9 = 986
986 – (4)² = 986 – 16 = 970
970 – (5)² = 970 – 25 = 945
945 – (6)² = 945 – 36 = 909

So, 909 is the missing term of the series. Hence, the first option is correct.

Popular Searches

Question : Directions: Which number can replace the question mark (?) in the following series?
999, 995, 986, 970, 945, ?
Option 1: 909
Option 2: 905
Option 3: 901
Option 4: 906

Related Questions

Question : Directions: Which number can replace the question mark (?) in the following series?
4, 7, 13, 22, ?, 49, 67
Option 1: 33
Option 2: 30
Option 3: 34
Option 4: 35

Question : Directions: Which number from among the given options can replace the question mark (?) in the following series?
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Option 1: 38
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Question : Directions: In the following question, select the missing number from the given series.
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Question : Directions: Which number from among the given options can replace the question mark (?) in the following series?
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Option 1: 68
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Option 1: 136
Option 2: 132
Option 3: 124
Option 4: 116

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Popular Searches

Question : Directions: Which number can replace the question mark (?) in the following series? 999, 995, 986, 970, 945, ?Option 1: 909Option 2: 905Option 3: 901Option 4: 906

Related Questions

Question : Directions: Which number can replace the question mark (?) in the following series? 4, 7, 13, 22, ?, 49, 67Option 1: 33Option 2: 30Option 3: 34Option 4: 35

Question : Directions: Which number from among the given options can replace the question mark (?) in the following series? 4, 16, 13, ?, 49, 196Option 1: 38Option 2: 31Option 3: 44Option 4: 52

Question : Directions: In the following question, select the missing number from the given series. 623, 626, 635, 662, 743, ?Option 1: 986Option 2: 966Option 3: 1026Option 4: 1016

Question : Directions: Which number from among the given options can replace the question mark (?) in the following series? 49, ?, 82, 101, 115, 134Option 1: 68Option 2: 71Option 3: 69Option 4: 62

Question : Directions: Which number from among the given options can replace the question mark (?) in the following series? 88, 94, 106, ?, 148, 178Option 1: 136Option 2: 132Option 3: 124Option 4: 116