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Question

What should come in place of ‘?’ in the given series?

10 14 22 34 50 ?

The correct answer is
70

Solving the Number Series: 10 14 22 34 50 ?

To find the missing number in the series 10, 14, 22, 34, 50, ?, we need to identify the pattern.

Identify Pattern in Differences

Calculate the difference between consecutive terms:

  • $14 - 10 = 4$
  • $22 - 14 = 8$
  • $34 - 22 = 12$
  • $50 - 34 = 16$

The differences are 4, 8, 12, 16.

Determine Next Difference

Observe the pattern in the differences: 4, 8, 12, 16. This is an arithmetic sequence where each term increases by 4.

The next difference in the sequence will be $16 + 4 = 20$.

Calculate Missing Term

Add the next difference (20) to the last term of the series (50) to find the missing number:

$50 + 20 = 70$

Therefore, the number that should come in place of ‘?’ is 70.

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Important Questions from Number Series (Notes)

  1. What will come in place of question mark (?) in the following series:
    $12, 6, 6, 9, 18, ?$
  2. In the following question, select the missing number from the given series:
    $2, 5, 17, 71, ?, 2159$
  3. Which number will come next in the series:
    8, 4, 4, 6, 12, ?
  4. One term in the given number series is wrong. Find out the wrong term.
    3,10,27,4,16,64,5,25,125
  5. What should come in place of the question mark (?) in the given series?
    $15 \ 22 \ 33 \ 50 \ 71 \ 98 \ ?$
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