Question

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Please answer it :-

Options
a) 435. c)451
b) 420. d)471

Please explain it and don't post only answer otherwise your answer will be reported

Please help.​

Answer 1

We know that the two last pages are 31 and 32 since their sum is 63. So the pages in the first half of the book are 1-16, and the second half 17-32.

He removed odd number of leaves in the first half (1 - smallest) and

even number in second half (2-smallest). To maximize the sum of whats left, he should be removing pages 1&2 from first half and pages 17,18,19 &20 from second half.

Total number of pages is (1+32)(16) = 528. Subtract the pages that were removed. 528 - (1+2+17+18+19+20) =451

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So the correct option is (c).

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hope it'll help ya.

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Be Bræïñly !

Answer 2

We know that the two last pages are 31 and 32 since their sum is 63. So the pages in the first half of the book are 1-16, and the second half 17-32.

He removed odd number of leaves in the first half (1 - smallest) and

even number in second half (2-smallest). To maximize the sum of whats left, he should be removing pages 1&2 from first half and pages 17,18,19 &20 from second half.

Total number of pages is (1+32)(16) = 528. Subtract the pages that were removed. 528 - (1+2+17+18+19+20) =451

.

.

So the correct option is (c).

.

hope it'll help ya.

.

Be Bræïñly !