Start learning 50% faster. Sign in now
Let PQR be (100p + 10q + r) where 'p', 'q' and 'r' are integers between (0 - 9). ATQ; 100p + 10q + r = (10p + q) + (10q + r) + (10r + p) Or, 100p + 10q + r = 11p + 11q + 11r So, 89p - q = 10r And, values of 'p', 'q' and 'r' must lie between 0 and 9. At p = 0, -q = 10r (Since, 'q' cannot be negative, this is never possible) At p = 1, 89 - q = 10c Maximum value of q = 9, So, 89 - 9 = 10r Or, r = 8 So, one possible pair of (p, q, and r) is (1, 9 and 8) Now at p = 1, the value of 10r will never be a multiple of 10, as the value of 'q' cannot exceed 9. So, only one pair would exist at p = 1. At p = 2, 178 - q = 10r Now, for any value of 'q', the value of '10r' would exceed 100, meaning the value of 'r' would exceed 9. So, 'p' cannot be more than 1. So, only pair of 'p', 'q' and 'r' that would satisfy the equation is 1, 9 and 8. So, required value = 1 + (6 × 9) + (4 × 8) = 1 + 54 + 32 = 87
Which PowerPoint view displays each slide of the presentation as a thumbnail and is useful for rearranging slides?
A Personal Computer uses a number of chips mounted on a circuit board called
The Apple equivalent of a motherboard is _______.
Which of the following places common data elements in order from smallest to largest?
Which of the following is not an e-mail service provider?
The operating system that is self-contained in a device and resident in the ROM is ______
What is the purpose of "swap space" or "page file" in virtual memory management?
Which of the following printers is used in conjunction with computers and uses dry ink powder?
Who is recognised as the Father's of the Internet?
Which of the following shortcut keys is used to close current or active window?