Page 78 - Computer - 2
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Example: Observe the given figure and count the number of triangles in
it.
Solution: There are 9 triangles in the figure - 4 small triangles marked
1 - 4, 4 medium triangles, and 1 large triangle marked in blue outline.
5
2 1 3
6 4 7
Coding-Decoding
Coding-Decoding is the process of substituting the letters of a word with
some other letters according to a certain rule. To get back the original
word, you have to apply the rule to the coded word in reverse order.
Example: The word PRINTER is coded as QSJOUFS in a certain code
language. Write the code for the word MONITOR using the same code
language.
Solution: If you match the letters of the word PRINTER with QSJOUFS,
we find that each letter of PRINTER is replaced with its next letter in the
alphabet. Thus, A is replaced with B, B with C, C with D, and so on. Thus,
the code for MONITOR will be NPOJUPS.
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