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How many three-digit nos. can be formed from the integers 2,5,6, and 7 if the nos.are less than 700?
1. if repitition of digits are allowed?

2 a.).if repitition of digits are not alloed? b.)write its possible outcomes.

Sagot :

Daedalusid
1. 3*4*4 = 48 ways

2. 3*3*2 = 18 ways
675 657 672 627 652 625 567 576 527 572 562 526 256 265 257 275 267 276

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