Question

How many numbers between 333 and 444 begin or end with 3?​

Answer 1

Answer:

72

Explanation:

All no. from 333 to 400 starts from 3, therefore 67 no. and 4 no. extra.

Answer 2

$We \:know \:that ,\\Numbers \: between \: 333 \: and \: 400 \\begin \: with \:number \:3 .$

$The \:total \: numbers \: between \\ 333 \:and \: 400\\ = 400 - 333 - 1 \\=400 - 334 \\=66$

$Numbers \: between \: 333 \: and \: 400 \\end \: with \:number \:3 = \{ 403,413,423,433 \}$

$Total \:numbers \: between \: 333 \\a nd \: 444 \: begin \: or \: end \: with\:3 \\are \: (66+4) = 70$

Therefore.,

$\green { 70 }$

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