SAT Math Multiple Choice Practice Question 276: Answer and Explanation

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Question: 276

12.

With the exception of the shaded squares, every square in the figure above contains the sum of the number in the square directly above it and the number in the square directly to its left. For example, the number 4 in the unshaded square above is the sum of the 2 in the square above it and the 2 in the square directly to its left. What is the value of x?

A. 6
B. 7
C. 8
D. 15
E. 30

Correct Answer: E

Explanation:

E Fill in the table above and to the left of the x by following the rule, like this:

This shows that .

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