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If a,b,c are even natural numbers, then ...

If a,b,c are even natural numbers, then `|{:(a-1,a,a+1),(b-1,b,b+1),(c-1,c,c+1):}|` is equal to

A

a+b+c

B

`a^2+b^2+c^2`

C

abc

D

none of these

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The correct Answer is:
A
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  10. The determinant Delta =|(a^2(1+x),ab,ac),(ab,b^2(1+x),bc), (ac,bc,c^2(...

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  16. If the expression |{:(x^2+x+3,1,4),(2x^4+x^3+2x+1,2,3),(x^2+x,1,1):}| ...

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  17. The sum of two non integral roots of |{:(x,2,5),(3,x,3),(5,4,x):}|=0 i...

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  18. |[1,1,1] , [(2^x+2^(-x))^2, (3^x+3^(-x))^2, (5^x+5^(-x))^2] , [(2^x-2^...

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