exam Maths Puzzle Numerical Ability

find four consecutive even integers whose sum is 196

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exam Other Question

In a complex number system, any quadratic equation has either one or two solutions. (That is the T/F question)

I believe this is false because I thought they will always have 2 solutions but can someone explain if I am wrong?
The cost of purchasing incandescent bulbs for use over a 9750-hour peroid is $9.75. The energy cost for incandescent bulbs over this peroid is $73. The cost of one equivalent fluor