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1 , 17 , 98 , 354 , ?

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Number Puzzle #180

What will be the next number in this series?

1 , 17 , 98 , 354 , ?

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If you see the difference between the numbers
16, 91, 256
2^4, 3^4, 4^4

next difference should be 5^4 i.s. 625, thus the next number should be 354+625 => 979

complete the series 11,15,19,18,26,21,32, 24,37,__ __

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Number Puzzle #179

 

What will be the next number in this series?

11,15,19,18,26,21,32, 24,37,____

Check your answer:-

Next number

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Next to next number
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Answer With Explanation
there are two series in this puzzle,
First is 11,19,26,32,37 & second is 15,18,21,24

first series is AP with a decreasing difference
11 -> 19 => 8
19 -> 26 => 7
26 -> 32 => 6
32 -> 37 => 5
thus next number should be 37 + 4 => 41

second series is AP with a difference of 3
15, 18, 21, 24 => next number should be 27

how many 9s ?

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Let me see how clever everyone is…
Solve the riddle :

Write numbers from 1 to 100…. how many 9s do you see?

Think properly and then answer

Check your answer:-

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Answer With Explanation
one 9 in every 10s (like 9, 19, 29, etc) => 10
extra 10 9s in 90 – 99 => 10
thus total 20

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