Sonlar va amallar (natural, butun, ratsional, haqiqiy sonlar) — test savollari javoblari bilan
Matematika · 14 ta ochiq savol (bankda jami 69 ta) · har birida to'g'ri javob va izoh
1. $99 \cdot 101$ ni hisoblang.
- A) $9999$
- B) $10000$
- C) $9899$
- D) $9900$
Javobni ko'rish
To'g'ri javob: A) $9999$
2. $48 \cdot 52$ ni hisoblang.
- A) $2496$
- B) $2500$
- C) $2504$
- D) $2400$
Javobni ko'rish
To'g'ri javob: A) $2496$
3. $998^2$ ni hisoblang.
- A) $996004$
- B) $996000$
- C) $996008$
- D) $996100$
Javobni ko'rish
To'g'ri javob: A) $996004$
4. $73^2 - 27^2$ ni hisoblang.
- A) $4600$
- B) $5000$
- C) $4000$
- D) $5400$
Javobni ko'rish
To'g'ri javob: A) $4600$
5. $n^4 + 4^n$ ($n$ - toq natural son) ni $5$ ga bo'linishini isbotlash uchun $n = 1$ da qiymatni toping.
- A) $3$
- B) $5$
- C) $7$
- D) $17$
Javobni ko'rish
To'g'ri javob: B) $5$
6. Ko'phad $P(x) = x^{100} + x^{99} + ... + x + 1$ ni $(x - 1)$ ga bo'lgandagi qoldiqni toping.
- A) $100$
- B) $101$
- C) $0$
- D) $1$
Javobni ko'rish
To'g'ri javob: B) $101$
7. $\sqrt[3]{2 + \sqrt{5}} \cdot \sqrt[3]{2 - \sqrt{5}}$ ni hisoblang.
- A) $-1$
- B) $1$
- C) $\sqrt[3]{-1}$
- D) A va C bir xil
Javobni ko'rish
To'g'ri javob: D) A va C bir xil
8. Agar $2^a = 3$ va $3^b = 5$ bo'lsa, $2^{ab}$ ni toping.
- A) $5$
- B) $6$
- C) $8$
- D) $15$
Javobni ko'rish
To'g'ri javob: A) $5$
9. Agar $3^x = 5^y = 15^z$ bo'lsa, $\frac{1}{x} + \frac{1}{y}$ ning $\frac{1}{z}$ ga nisbati nechaga teng?
- A) $2$
- B) $1$
- C) $\frac{1}{2}$
- D) $3$
Javobni ko'rish
To'g'ri javob: B) $1$
10. $\frac{x}{6} = \frac{10}{15}$ dan $x$ ni toping.
- A) $2$
- B) $3$
- C) $4$
- D) $5$
Javobni ko'rish
To'g'ri javob: C) $4$
Bu — mavzuning ochiq namuna qismi. To'liq bank, vaqt rejimi, tahlil va xatolar ustida ishlash — test rejimida.