Olimpiada

5 ni kubini ikki baravaridan 8 ni ayirsak, natija quyidagilardan qaysi biriga bo'linmaydi?

• 121

• 11

• 2

• 3

• 0

• 24

• 25

Quyidagi ketma ketlikning tushirib qoldirilgan hadini toping:

72, 76, 73, 77, 74, ___, 75

• 70

• 71

• 75

• 78

Agar ushbu 1, 2, 11, 22, 111, 222, ... ketma-ketlik berilgan bo'lsa, u holda bu ketma ketlikning 999-hadining raqamlari yig'indisini toping.

• 999

• 1998

• 500

• 1000

Agar ketma-ket kelgan ikkita toq sonning yig'indisi 2020 ga teng bo'lsa, u holda ularning kichigini toping.

• 1011

• 1013

• 1009

• 1007

Ketma-ket kelgan 7 ta natural sonlar yig'indisi 84 ga teng. Ularning eng kattasi va kichigi orasidagi farqni toping.

• 7

• 6

• 14

• 21

• 431

• 673

• 422

• 501

2021 sonini olish uchun 113121 sonidan 2020 sonini necha marta ayirish kerak?

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• 55

• 65

• 68

• 1

• 9

• 18

• 5

• 4