170 pages; if you multiply 0.68*250, you get 170. You multiply because you are taking the percentage of the finished piece, making it a fraction out of a whole (in this case, out of 1), then multiplying it by 250 because 250 is the whole project.
250 x 0,68 = 170 pages
A book has 500 pages:
The 1st page says "Exactly 1 page in this book is false."
The 2nd page says "Exactly 2 pages in this book are false."
The 500th page says "Exactly 500 pages in this book are false."
Can any of the pages be true?
Ms. Sharma asked her students to find the sum of all pages of their maths book.
Sumit gave the answer as 1098.
Ms. Sharma told him that he has not added one page.
Find the page number which Sumit forgot to add?
Mr. Ramanujam asked his students to find the sum of all pages of their maths book.
Chatur gave the answer as 643.
The teacher told him that he has not added one page.
Find the page number which the Chatur forgot to add.
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