Question

91. How many numbers are there between 500 and 600 in which 9 occurs only once (A) 18 (B) 19 (C) 20 (D) 21


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Answer 1

Answer:

I think 18 is the right answer

Answer 2

Answer:

(A) 18

Step-by-step explanation:

Required numbers are 509, 519, 529, 539, 549, 559, 569, 579, 589, 590, 591, 592..598

so, there are 18 such numbers in which 9 occurs only once.

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