Math, asked by daniaryan212, 10 months ago

what has no variables

Answers

Answered by shridevishinde248
6

Answer:

The subexpression X{n} means to match n number of the subexpression X. The number n must be a literal constant, like 5 or 23. It can't be a variable (because then the variable would be a counter, and REs don't have counters.) For example

[a-d]{5}

means to match five characters, where the characters are selected from 'a' through 'd'. The expression

a{X}z{X}

is not legal. (It is a failed attempt to match strings that start with any number of 'a' and end with the same number of 'z'.)

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Answered by Breezywind
10

THE CONSTANTS HAVE NO VARIABLES....

EXAMPLE-- 2,8,10 ETC........

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