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How to solve this one... can someone pls give detailed steps?The integers 1, 2, …, 40 are written on a blackboard. The following operation is then repeated 39 times: In each repetition, any two numbers, say a and b, currently on the blackboard are erased and a new number a + b – 1 is written. What will be the number left on the board at the end?

what is the proper format for letters and applications?

15 men and 18 women together finish a work in 6 days.One man alone finishes that work in 150 days. One woman will finish the same work in

How to solve tournament related questions?
Specifically a question in the mock cat 1, Question set 59-62?

mock15,quant no. 98,I couldn't understand the explanation.

how do use para dumbles

K borrowed a certain sum at SI. If instead the sum was borrowed at CI, d intrst for d first 2 years increases by Rs 100, while the total intrst for d first 3 years increases by Rs 305. Find d sum

statements:All documents are files.Some files are papers.All papers are certificates.No certificate is a manuscript.Conclusions:I. At least some documents are papers.II. No manuscript is a document.III. At least some certificates are files.IV. No paper is a document.

When all students in a school are made to stand in a row of 54, 30 such rows are formed. If the students are made to stand in the rows of 45, how many such rows can be formed ?

When all students in a school are made to stand in a row of 54, 30 such rows are formed. If the students are made to stand in the rows of 45, how many such rows can be formed ?