exam Maths Puzzle Numerical Ability

the conjugate of 1 + i^4 is
a) 0
b)1-i^4
C) 2
d)-2

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exam Other Question

find the distance between (-2,9) and (-5,15)
a- 6.71
b- 18.67
c- 45.02
d- 24.18 The length of Jims leader is always 2 feet shorter than the length of his fishing rod. If the product of the length of the leader and the length of the rod equals strength of his line in lbs and he uses 16 lbs line, What is the length of his leader?