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# XI_Maths_Complex numbers_1 online Test

If  are the cube roots of unity, then their product is _____.
0
-1
1
If  is a complex cube root of unity, then the value of  is _____.
1
-1
3
0
The value of  is _____.
– 1
i
0
1
If  then x = _____.
None of the above
The value of  _____.
-1
-2
-3
-4
/
i if n is even, – i if n is odd
1 if n is even, – 1 if n is odd
1 if n is odd, – 1 if n is even
i if n is even, – 1 if n is odd
The value of  is _____.
0
27
26
None of the above
The real part of  is equal to _____.
1/4
1/2
tan (/2
1/1– cos (
The multiplication inverse of a number is the number itself, then its initial value is _____.
i
– 1
2
– i
If  and  then value of k equals _____.
2
4
6
1
Description:

This test is based on AIEEE and IIT JEE exam syllabus.

By: kaala
1072 days 23 hours 8 minutes ago

knowledge

By: devapi
754 days 10 hours 36 minutes ago

correct is:
1 if n is odd, i when n is even

725 days 23 hours 10 minutes ago

Very strange test. If n is even - the answer is i. For example, if n = 0, then i^1 = i. If n is odd - the answer is 1. For example, i^(1 3) = 1.

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