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Number Patterns/Relations

Complete the ...

Question

Complete the missing algebraic expression. Add the adjacent cells to get the value in row above.

A

4a + 2

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B

4a - 2

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C

4a

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D

6a

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Solution

The correct option is C
4a

Adding the cells in the middle row we get,

(2a -1) + (2 +1)

= 2a -1 +2a + 1

= 4a

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Complete the missing algebraic expression. Add the adjacent cells to get the value in row above.

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