- 2 6. How many 7-digils numbers are there in all?

1.	- 2 6. How many 7-digils numbers are there in all?
Answer» <html><body><p>-step explanation:There are 18 two digit numbers containing 7. <a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a>: 7 is a unit digit and if we add <a href="https://interviewquestions.tuteehub.com/tag/10-261113" style="font-weight:bold;" target="_blank" title="Click to know more about 10">10</a> with it, it <a href="https://interviewquestions.tuteehub.com/tag/results-2643" style="font-weight:bold;" target="_blank" title="Click to know more about RESULTS">RESULTS</a> a two digit number <a href="https://interviewquestions.tuteehub.com/tag/17-278001" style="font-weight:bold;" target="_blank" title="Click to know more about 17">17</a>, just by changing the digit in the tenth <a href="https://interviewquestions.tuteehub.com/tag/place-1155224" style="font-weight:bold;" target="_blank" title="Click to know more about PLACE">PLACE</a>, contains 7.</p></body></html>

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