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1 2 6 21 88 445 2676 . What is the next Number?
(1+1)1 = 2 (2+1)2 = 621=(6+1)3 = 21 (21+1)4 = 88 So (88+1)5 = 445
How do you get 88 with 1 2 3 4 6 with two operational signs?
3 * 6 * (1 + 4) - 2 = 18 * 5 - 2 = 90 - 2 = 883 * 6 * (1 + 4) - 2 = 18 * 5 - 2 = 90 - 2 = 883 * 6 * (1 + 4) - 2 = 18 * 5 - 2 = 90 - 2 = 883 * 6 * (1 + 4) - 2 = 18 * 5 - 2 = 90 - 2 = 88
What is the 6th triangle number?
21, which is 6*(6+1)/2
What is 2 one third plus 1 six and sevenths?
2 1/3 + 1 6/7 first needs to be converted to the least common factor of the denominator, so the least common factor of 3 and 7 is 21. then you would multiply the top and the bottom by the number that multiplies with the denominator to get 21. The number to multiply to 3 would be multiplied by 7 to get 21 and vise versa, so for 2 1/3, 1 x 7 = 7 and 3 x 7 = 21 which makes 2 7/21. For 1 6/7, 6 x 3 = 18 and 7 x 3 = 21 which makes 1 18/21. 2 7/21 + 1 18/21 = 4 4/21 or, in improper form, 88/21
What is the answer to 4and 1half -2 and 1 third?
41/2 - 21/3 = 43/6 - 22/6 = 21/6
