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Exam
Numerical Ability
Determine the number of rectangles that can be formed on a chess board??
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What the next term in the sequence following sequence?
1, 11, 21, 1211, 111221, 312211, 13112221, 1113213211...
The repeated digital sum, or digital root of 6788 is 2.
6+7+8+8 = 29
2+9 = 11
1+1 = 2.
What is the Digital root of the 180 digit number 1011121314.... ....96979899 made from the numbers 10 to 99 ?