exam Maths Puzzle Numerical Ability

each sequence has a formula associated with it.
True
False

Question 2 (5 points)Save

The sequence a is defined by defining the a_i to be .
What is a_4 ?
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exam Other Question

A credit card, a piece of cardboard and a ruler are all examles of what geometric tool? The sum of two Numbers is -2. If twice the smaller number is added to three times the larger, the result is 1. Find the two numbers.