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Archita Dixit asked in Math

Answer me please

Thank You
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Brijendra Pal answered this

6 cubes for three steps gives us 1 for the first step 2 for the second and 3 for the third.

1+2+3=6

This is a logical progression which carried to eleven steps give us:

1+2+3+4+5+6+7+8+9+10+11=66 cubes