<p>A few more tips for picking numbers:</p>
<p>(1) If there are fractions in the question a good choice might be the least common denominator (lcd) or a multiple of the lcd.</p>
<p>(2) Don’t pick a negative number as a possible answer to a grid-in question. This is a waste of time since you can’t grid a negative number.</p>
<p>(3) If your first attempt doesn’t eliminate 4 of the 5 choices, try to choose a number that’s of a different “type.” Here are some examples of “types”:</p>
<p>(a) A positive integer greater than 1.
(b) A positive fraction (or decimal) between 0 and 1.
(c) A negative integer less than -1.
(d) A negative fraction (or decimal) between -1 and 0.</p>
<p>(4) If you’re picking pairs of numbers try different combinations from (3). For example you can try two positive integers greater than 1, two negative integers less than -1, or one positive and one negative integer, etc.</p>