Question
The average age of A and B is 22 years. If A is to be
replaced by C, the average would be 21 years. The average age of C and A is 23 years. Find the age of A.Solution
A + B = 2 × 22 = 44 yr. B + C = 2 × 21 = 42 yr. C + A = 2 × 23 = 46 yr. On adding all three, 2 (A + B + C) = 44 + 42 + 46 = 132 ⇒ A + B + C = 66 ∴ A = (A + B + C) – (B + C) = 66 – 42 = 24 yr.
Which of the following is not an example of hardware?
A Personal Computer uses a number of chips mounted on a circuit board called
Which of the Following is not a non-impact printer?
______is the measurement of things such as fingerprints and retinal scans used for security access.
Holding the mouse button down while moving an object or text is known as __
___________________ can scan the contents of a hard disk to find files or areas that are corrupted in some way and eliminates them for a more efficientl...
The bubbles in a bubble memory pack are created with the help of
The key F12 opens a ___________________
________Function key refreshes the current window.
What is the main function of an operating system's kernel?
