Question

Q39. If a 3-digit integer is selected at random from the integers 100 through 199, inclusive, what is the probability that the first digit and the last digit of the integer are each equal to one more than the middle digit?

• A. (a) 2/225
• B. (b) 1/111
• C. (c) 1/110
• D. (d) 1/100

Answer 1

The correct option is D

(d) 1/100

Total numbers from 100 to 199 = 100;

Only number which satisfies the given conditions is 121;

Probability = 1/100;