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How many ways can you choose 3 books out of a selection of nine books?
93
Books in Old Testament of protestant version?
There are a total of 39, thirty nine books in the old Testament.
What is the area of an octagon which is nine feet on each side?
The area of an octagon which is nine feet on each side equates to 391.1 feet2
How do you write each number in words for 0.9?
0.9 = nought point nine or nine tenths
How many combinations of 9 digits are possible if no two adjacent digits are the same?
The first can be any one of 10 digits. For each of those . . .The second can be any one of the nine digits not the same as the first. For each of those . . .The third can be any one of the nine digits not the same as the second. For each of those . . .The fourth can be any one of the nine digits not the same as the third. For each of those . . .The fifth can be any one of the nine digits not the same as the fourth. For each of those . . .The sixth can be any one of the nine digits not the same as the fifth. For each of those . . .The seventh can be any one of the nine digits not the same as the sixth. For each of those . . .The eighth can be any one of the nine digits not the same as the seventh. For each of those . . .The ninth can be any one of the nine digits not the same as the eighth.The total number of possibilities is: (10 x 9 x 9 x 9 x 9 x 9 x 9 x 9 x 9) = 430,467,210 .If matching adjacent digits were allowed there would be 1,000,000,000 possibilities.So the restriction has eliminated 56.95% of them.
