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Cheatsheet: Number Series | IBPS Clerk Prelims 2024 Preparation - Bank Exams PDF Download

Theory

If the numbers do not follow an addition or multiplication pattern, check if you can use a rule that involves two or more basic arithmetic functions ( +, -, x, / ). For example, in the series 2, 4, 8, 6, 3,… the rule is: add 2 to the first number to get the second number, then multiply the second number by 2 to get the third number, subtract 2 from the third number to get the fourth number and divide the fourth number by 2 to get the fifth number.

Cheatsheet: Number Series | IBPS Clerk Prelims 2024 Preparation - Bank Exams

Tips

Even if the difference between the numbers is dynamic rather than constant, there is still a clear logical rule. In such a case, see if the difference of numbers is in Arithmetic Progression – first difference is 1, second difference is 2 and so on.

Solved Example

Question for Cheatsheet: Number Series
Try yourself:

32, ?, 1024, 2048, 2048

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Question for Cheatsheet: Number Series
Try yourself:9, 5, 6, 10.5, 23 ?
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Question for Cheatsheet: Number Series
Try yourself:

17, 98, 26, ?, 35, 80

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Question for Cheatsheet: Number Series
Try yourself:2, 17, 89, 359, 1079, ?
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Question for Cheatsheet: Number Series
Try yourself:

7, 4.5 ,5.5, 12, 49,?

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