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Q49: A student worked on her statistics project
Q69: A university was interested in student reaction
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Q253: <span class="ql-formula" data-value="a _ { n }
Q309: How many different three-digit numbers can be
Q357: <span class="ql-formula" data-value="\sum _ { k =
Q363: <span class="ql-formula" data-value="\frac { 9 } {
Q404: <span class="ql-formula" data-value="\frac { ( y -
Q462: Find the sum of all the integers
Q569: <span class="ql-formula" data-value="\sum _ { i =