.How many three-digit number can be formed from the digits 0,1,3,5,6 if repetition of digits is allowed *
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Answer:
100
Step-by-step explanation:
100 300 500 600
101 301 501 601
103 303 503 603
105 305 505 605
106 306 506 606
110 310 510 610
111 311 511 611
113 313 513 613
115 315 515. 615
116. 316. 516. 616
130. 330. 530. 630
131. 331. 531. 631
133. 333. 533. 633
135. 335. 535. 635
136. 336. 536. 636
150. 350 550. 650
151. 351. 551. 651
153. 353. 553. 653
155. 355 555. 655
156. 356. 556. 656
160. 360. 560. 660
161. 361. 561. 661
163. 363. 563. 663
165. 365. 565. 665
166. 366. 566. 666
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