Exams › SSC CGL (Prelims) › General

What is the average of all three-digit numbers divisible by 19?

1. 475
2. 525
3. 551
4. 575

Correct answer: 551

Solution

The first three-digit multiple of 19 is 114 and the last is 988. Since these multiples form an arithmetic progression, the average of all terms is the average of the first and last terms: $(114+988)/2=551$.

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