यदि $a=1+2+4+\cdots$ $n$ पदों तक,$b=1+3+9+\cdots$ $n$ पदों तक और $c=1+5+25+\cdots$ $n$ पदों तक है,तो $\Delta=\left|\begin{array}{ccc}a & 2b & 4c \\ 2 & 2 & 2 \\ 2^n & 3^n & 5^n\end{array}\right|=$

  • A
    $(30)^n$
  • B
    $(10)^n$
  • C
    $0$
  • D
    $2^n+3^n+5^n$

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सारणिक $\left| {\begin{array}{*{20}{c}}{{a^2} + {x^2}}&{ab}&{ca}\\{ab}&{{b^2} + {x^2}}&{bc}\\{ca}&{bc}&{{c^2} + {x^2}}\end{array}} \right|$ किसका भाजक है?

Difficult
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यदि $A$ कोटि $3 \times 3$ का कोई वर्ग आव्यूह है,तो $|3A|$ किसके बराबर है?

यदि $\Delta _1 = \left| \begin{matrix} b^5c^6(c^3 - b^3) & a^4c^6(a^3 - c^3) & a^4b^5(b^3 - a^3) \\ b^2c^3(b^6 - c^6) & ac^3(c^6 - a^6) & ab^2(a^6 - b^6) \\ b^2c^3(c^3 - b^3) & ac^3(a^3 - c^3) & ab^2(b^3 - a^3) \end{matrix} \right|$ और $\Delta _2 = \left| \begin{matrix} a & b^2 & c^3 \\ a^4 & b^5 & c^6 \\ a^7 & b^8 & c^9 \end{matrix} \right|$ है,तो $\Delta _1 \Delta _2$ का मान ज्ञात कीजिए।

Difficult
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सारणिक का मान ज्ञात कीजिए: $\left| {\begin{array}{*{20}{c}}{{b^2} - ab}&{b - c}&{bc - ac}\\{ab - {a^2}}&{a - b}&{{b^2} - ab}\\{bc - ac}&{c - a}&{ab - {a^2}}\end{array}} \right|$

सारणिक का मान ज्ञात कीजिए: $\left| \begin{array}{ccc} (a^x + a^{-x})^2 & (a^x - a^{-x})^2 & 1 \\ (b^x + b^{-x})^2 & (b^x - b^{-x})^2 & 1 \\ (c^x + c^{-x})^2 & (c^x - c^{-x})^2 & 1 \end{array} \right|$

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