AP: The structure of brick staircase — task. Mathematics CBSE, Class 10.

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A brick staircase has a total of 23 steps. The bottom step requires 70 bricks. Each successive step requires two bricks less than the previous step.

i) How many bricks are required for the top most step?

ii) How many bricks are required to build the stair case?

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5. AP: The structure of brick staircase