How many numbers are there in the following number-series which are preceded by 5 but not followed by 7? 23423425473243192547547234529546
Question and options
How many numbers are there in the following number-series which are preceded by 5 but not followed by 7?
23423425473243192547547234529546
23423425473243192547547234529546
- 1
- 2
- 3
- 0
Answer and explanation
Correct answer: B - 2
Scanning 23423425473243192547547234529546, digits preceded by 5 are 4,4,4,2,4. The first three 4s (in 547) are followed by 7; the 2 in 452 and the 4 in 546 are not. Count = 2.
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