CSATNumber System & SeriesPermutation and Combination2018

While writing all the numbers from 700 to 1000, how many numbers occur in which the digit at hundred's place is greater than the digit at ten's place, and the digit at ten's place is greater than the digit at unit's place?

A

61

B

64

C

85

D

91

Correct Answer: Option C

Explanation

1. **Analyze the Goal:** We need to count numbers in range [700, 100

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