UNLV, again unanimously, Ohio State and Arkansas remained 1-2-3, and North Carolina rode the school's 1,500th victory into fourth place in the weekly Associated Press college basketball poll.

UNLV breezed to three victories last week in extending its winning streak to 36 games, including 25 in a row this season. The Rebels polled all 63 first-place votes cast.Ohio State (24-1) had 1,503 points to 1,455 for Arkansas (27-2).

North Carolina (21-4) achieved victory No. 1,500 by bashing Clemson 73-57 on Saturday after opening the week with a 118-50 romp

over The Citadel that gave the Tar Heels a 21st consecutive 20-win season. Both figures are NCAA records.

Carolina got to 1,500 one game ahead of Kentucky, which in 1969 became the first school to win 1,000 games. The Wildcats (20-6) stumbled at Vanderbilt last Wednesday and then beat Florida on Saturday for victory No. 1,499 and 20-win season No. 36, one more than North Carolina. The Wildcats dropped a spot to 13th this week.

Indiana (23-4), which closed its week with a 112-79 romp over Michigan, dropped one notch to fifth after an 80-79 overtime loss to Iowa earlier. The defeat all but ended Hoosier chances of catching Ohio State in the Big Ten title chase.

Syracuse (24-4), beaten at Madison Square Garden by St. John's, maintained its lead in the Big East Conference standings while falling one spot in the rankings, to sixth. The Orangemen were followed by Arizona, Duke, Utah and Kansas.

Arizona (22-5) moved up two spots, thanks in large part to Sunday's 103-96 double-overtime victory over Duke (23-6), which extended the Wildcats' homecourt winning streak to 61 games.

Kansas (20-5) was beaten by Colorado and fell two spots. Utah, which has already clinched the Western Athletic Conference title, beat Colorado State 67-56 for its 25th victory in 27 games.

The only addition to the top 25 this week was Alabama (17-8), in at No. 24 in place of Georgetown, a perennial power which lost its ninth game of the season, a 78-65 decision to No. 22 Pittsburgh. Pitt, which split two games last week, and No. 25 Virginia, which lost both its outings, remained in the top 25 despite nine defeats.

New Mexico State (21-3), which tonight gets its second chance to derail UNLV's unbeaten powerhouse, heads up the second 10, followed by Oklahoma State, Kentucky, Southern Mississippi, Nebraska, UCLA, St. John's, LSU, East Tennessee and Seton Hall.

East Tennessee (24-4) was involved in the biggest move among the second echelon, dropping from 13th to 19th after a 107-103 overtime loss to Marshall.

The last five is Seton Hall, Princeton, Pitt, Mississippi State, Alabama and Virginia.

*****

(Poll)

AP Top Twenty Five

1. UNLV 25-0 1,575

2. Ohio St. 24-1 1,503

3. Arkansas 27-2 1,455

4. North Carolina 21-4 1,346

5. Indiana 23-4 1,277

6. Syracuse 24-4 1,269

7. Arizona 22-5 1,198

8. Duke 23-6 1,108

9. Utah 25-2 1,042

10. Kansas 20-5 1,012

11. New Mexico St. 21-3 822

12. Oklahoma St. 20-5 772

13. Kentucky 20-6 767

14. Southern Miss. 20-4 708

15. Nebraska 23-5 664

16. UCLA 20-7 637

17. St. John's 19-6 630

18. LSU 19-7 589

19. E. Tennessee St. 24-4 472

20. Seton Hall 18-7 358

21. Princeton 20-2 317

22. Pittsburgh 19-9 165

23. Mississippi St. 18-7 158

24. Alabama 17-8 129

25. Virginia 19-9 105