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How many 7'immediately preceded by 6 bu...

How many 7'immediately preceded by 6 but not immediately followed by 4 are there in the following series?
7 4 2 7 6 4 3 6 7 5 3 5 7 8 4 3 7 6 7 2 4 0 6 7 4 3

A

One

B

Two

C

Four

D

Six

Text Solution

Verified by Experts

The correct Answer is:
B
The given number series is follows:

Therefore, total number of such 7s = Two.
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LUCENT PUBLICATION-NUMBER PROBLEMS -Exercise (Type-I: Counting of Digits in the Sequence)
  1. How many such 6s are there in the following number series, each of whi...

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  2. How many 4's are there preceded by 7 but not followed by 3? 5 9 3 2 ...

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  3. How many 7'immediately preceded by 6 but not immediately followed by ...

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  4. In the following series, how many such odd numbers are there which are...

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  5. In the series given below count the number of 9s. each of which is not...

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  6. How many such 5s are there in the following number series each one of ...

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  7. In the following series of digits how many even number are immediately...

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  8. In the following series, how many such odd numbers are there which are...

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  9. In the following number sequence, how many such even numbers are there...

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  10. Count each 2 in the following sequence of numbers that is immediately ...

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  11. How many digits are there in the following sequence which are either i...

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  12. In the following number series, how many 6s are there which are immedi...

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  13. In the series," 6 4 1 2 2 8 7 4 2 1 5 3 8 6 2 1 7 1 4 1 3 2 8 6" h...

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  14. In the series, how many pairs of alternate numbers have a difference ...

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  15. In the following number series, how many even numbers are there, which...

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  16. How many 3s are there in the following sequence such that the sum of t...

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  17. In a school, the following codes were used during physical exercise pe...

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  18. In the following sequence of instructions, 1 stands for Run, 2 stands ...

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  19. 8 9 7 6 5 4 3 4 2 6 8 9 7 2 4 5 9 2 9 7 6 4 7 6 How many 7's are prec...

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  20. Study the number series given below and answer the questions that foll...

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