14. Using the digits 5, 6, 7, 8, 9 find the number of two digits numbers that can
be formed?
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Step-by-step explanation:
Numbers formed by using 5,6,7,8,9 are:-
➡️56,57,58,59,65,67,68,69,75,76,78,79,85,86,87,89,95,96,97,98
Total numbers formed =20
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