Natural va butun sonlar

1.1.5 Oxirgi raqam.
(96-13-11) 2100 ning oxirgi raqamini toping?
A) 2 B) 0 C) 4 D) 6 E) 8
Yechish: 2 soni darajalarining oxirgi raqamlari
har 4-darajadan keyin takrorlanib kelishini kuzatish
mumkin:
21 = 2; 22 = 4; 23 = 8; 24 = 16; 25 = 32;
26 = ...4; 27 = ...8; 28 = ...6; ...
2 ning daraja ko’rsatkichi 4 ga bo’linsa, u son 6 bilan
tugar ekan. J: 6 (D).
1. (96-3-71) 899 ning oxirgi raqamini toping.
A) 0 B) 2 C) 4 D) 6 E) 8
2. (96-9-11) 7100 ning oxirgi raqamini toping.
A) 3 B) 5 C) 7 D) 9 E) 1
3. (96-12-69) 3101 ning oxirgi raqamini toping.
A) 3 B) 1 C) 7 D) 9 E) 5
4. (97-1-2) Ayirma qanday raqam bilan tugaydi?
17 · 28 · 41 · 35 - 24 · 12 · 87
A) 0 B) 2 C) 4 D) 6 E) 8
5. (97-5-13) 61971 ning oxirgi raqamini toping.
A) 2 B) 6 C) 8 D) 4 E) 1
6. (97-6-2) Yig’indining oxirgi raqamini toping.
16 · 27 · 38 · 19 + 22 · 43 · 98
A) 8 B) 6 C) 4 D) 2 E) 0
7. (97-9-13) 21971 ning oxirgi raqamini toping.
A) 2 B) 6 C) 4 D) 8 E) 0
8. (97-11-2) Yig’indining oxirgi raqamini toping.
15 · 25 · 37 · 43 + 34 · 48 · 77
A) 4 B) 9 C) 0 D) 5 E) 7

9. (99-1-2) Ayirmaning oxirgi raqamini toping.

920 - 720
A) 0 B) 7 C) 1 D) 3 E) 2
10. (99-6-7) Ifodaning qiymati qanday raqam bilan
tugaydi?
116 + 146 - 133 - 8
A) 1 B) 2 C) 3 D) 4 E) 6
11. (99-6-11) Yig’indi qanday raqam bilan tugaydi?
91996 + 91997
A) 0 B) 1 C) 2 D) 3 E) 5
12. (99-8-8) Oxirgi raqami 3 ga teng bo’lgan 13 ta
ko’paytuvchining ko’paytmasi qanday raqam bilan tugaydi.
A) 3 B) 1 C) 9 D) 7 E) 6
13. (00-1-2)* 1 dan 50 gacha bo’lgan sonlarning ko’-
paytmasi nechta nol bilan tugaydi?
A) 14 B) 10 C) 13 D) 11 E) 12
14. (00-2-9) Ushbu 1 · 2 · 3 · ... · 50 ko’paytma nechta
nol bilan tugaydi.
A) 8 B) 10 C) 9 D) 14 E) 12
15. (00-3-8) Ayirmaning oxirgi raqamini toping.
1 · 2 · 3 · 4 · ... · 26 · 27 - 1 · 3 · 5 · 7 · ... · 25 · 27
A) 4 B) 3 C) 5 D) 6 E) 8
16. (00-5-2) 32000 soni qanday raqam bilan tugaydi?
A) 0 B) 1 C) 2 D) 3 E) 7
17. (00-6-1)* 10 dan boshlab 75 dan katta bo’lmagan
barcha natural sonlarni ko’paytirish natijasida hosil
bo’lgan sonning oxirida nechta nol qatnashadi?
A) 15 B) 16 C) 17 D) 18 E) 14
18. (01-2-4) Ushbu 4343-1717 ayirmani 10 ga bo’lganda
hosil bo’ladigan qoldiqni toping.
A) 5 B) 2 C) 1 D) 0 E) 7
19. (02-9-7) 19982002 + 19972001
yig’indining oxirgi raqamini toping.
A) 7 B) 5 C) 3 D) 1 E) 9